Category: Computing

Atari Lynx 2 handheld games console

Meet Mikey, and Suzy! Well it’s actually an Atari Lynx II from 1991. Mikey and Suzy were the names given to components within the console. Anyway it doesn’t work, so let’s try to breathe some life into it.

What the listing stated:

The product is an Atari Lynx 2 handheld console, originating from Japan. It is a spare or repair item, as it is not in working condition. The package does not include a charger. This vintage gaming device, released by Atari, offers portability and gaming capabilities. Ideal for collectors or enthusiasts looking to fix or restore a piece of gaming history.

EBay

The item I have purchased

It’s a faulty item, one of many I have been chasing over the last few months, however their resale prices even when faulty, can command some quite hefty prices. I’ve managed to purchase this one at £65:00GBP and that is a price I am content with, as some of the recent ones I have seen went for a higher price even with parts missing or body damage. Cosmetically this one appears to be in a good condition with everything intact. However, the actual fault has not been declared, just that it is faulty and not working. I will have to do a little fault finding to pinpoint the issue, though I suspect initially that a full capacitor change will be the order of the day.

I want this to be part of my personal collection, alongside the Lynx 1 that I also have.

Here’s a little bit of information regarding this unit:

The Atari Lynx II, released in 1991, is the sleeker, redesigned version of Atari’s pioneering 16-bit handheld color console. It addressed original flaws by offering improved battery life, a backlit LCD, and stereo sound, while retaining impressive hardware features like hardware sprite scaling and a unique “lefty” flip mode. 

Key Features and Design

The Lynx II packed advanced technology for its time, including several highly unique design choices:

The Display: It features a vibrant 3.5-inch color LCD. Unlike the original, the Lynx II included an option to toggle the backlight off to save battery. 

Left-Handed Mode: Because of its symmetrical control layout, the entire system can be flipped 180 degrees. The internal software features a “flip” button to invert the screen, converting it into a truly left-handed console. 

Vertical Gameplay: Some games, such as Qix, are designed to be played holding the system vertically like a book, taking advantage of its unique design architecture. 

Comlink Play: It supports up to eight players for local multiplayer over “ComLynx” cables. 

Hardware & Power Specs

Processor: 16-bit custom CMOS chip (nicknamed “Mikey”) running at 16 MHz.

Graphics: Custom graphics chip (nicknamed “Suzy”) featuring hardware sprite scaling, zooming, and distortion.

Battery Life: Runs on 6 AA batteries, which deliver about 4-5 hours of gameplay with the backlight on. Due to this high power consumption, an AC adapter was a common necessity. 

Courtesy t’internet

So, without any further suppositions as to what’s wrong with it, let’s just await its arrival to carry out a full assessment.

Assessment:

I believe that to do a proper test on these units you have to have a game cartridge installed, this is my first issue, I don’t have any cartridges so I have had to purchase the cheapest one I could find for testing purposes. I’ve managed to pick one up for £11:00GBP and to be honest that isn’t too bad. It may well be the worst game they ever produced, who knows? But it will be fine for testing purposes.

Checkered flag for the Atari Lynx

Well, we still wait. Two weeks down the line and only the game cartridge has arrived. Not much I can say about that apart from it looks ok.

The game cartridge.

If the game doesn’t function there is not a great deal I can do here. As you can see it’s just a wafer thin plastic plug with no user access available. About the only thing you can do is clean the contacts.

We just need the console to arrive now……

And it’s arrived and to be quite honest it is in a good condition cosmetically, and for an item that’s now 35 years old it has been well looked after. No need to put any batteries in as there are already a fresh set in there, I have checked their voltages and they are fine. 6 x AA batteries turning out around 9 volts, the units requirement.

As I have previously stated, without a game cartridge installed the unit does not turn on. When a game is installed and the unit is turned on, I get an audible short “click” and the back light of the screen comes on, I get nothing else and am unable to get any sound or adjustment on either the volume or screen contrast dials.

Screen off
Screen on
Bottom
Top
Rear

It’s looking very much like either a screen issue, or an issue related to the failed capacitors on the main board. There is one particular capacitor “C41” that controls the main power board that is notorious for failing. I will check this initially to see how it is fairing, if it is ok I will make my way through the board checking other components as well as looking for other points of known failure such as weak solder joints.

Repair:

Firstly, let’s get into the unit, and this requires the removal of five screws in total.

After removal of the rear of the consol
Board removed
Ribbon cables detached
The power side of the board

The back should then lift off. Carefully remove the two screen ribbon cables, the power jack and the speaker jack and the whole of the main should just lift out.

A word of warning here. The power side of the board has a number of points that if touched will give you a nasty jolt of many hundreds of volts, a very quick and potent shock and you will certainly know what’s happened. Be very careful handling anything in this area, especially around the capacitors, and always make sure you bleed the power once the power source has been removed. If you are working live in this area, please be very careful. It’s amazing that just 9 volts of injected power can create such high voltages. You have been warned!

I’m going to order a full replacement capacitor kit, for an item of this age it’s probably a wise investment if you want the unit to be around for a good few years yet, even if the caps are not at issue they would probably need doing in the end anyway. The capacitor kit in its entirety (number of caps*) costs £9:80GBP and that’s a really reasonable price to pay to ensure the units usage can continue for many years to come.

The capacitor kit has arrived and there are 24 included. I think there are only 20 to replace (I could be wrong) so I may have a few left over.

The capacitor kit

I’ve started by removing the most prominent known capacitor that falls and that is C41. It’s a 10v 470uF value and has a tolerance of +\- 20%. So in Theory this capacitor has a value that can fluctuate between 376 and 564 micro farad, and the one on this board is registering 514uF. In theory it is still working, however it’s gradually creeping closer to to the limits of its tolerance.

Old C41 capacitor removed
New C41 capacitor installed

And to be honest, that was pretty much the same result with the other 19 I replaced. All were within their tolerance but at the higher end. The problem here is not capacitor related, however it’s always a wise move to replace them, before they finally go bad and cause other issues.

As replaced I marked them with a black marker
Black marker everywhere, job complete
The old removed capacitors

The recap has been successful, however I know it’s not going to make a difference, and putting it back on power confirms this. There is no difference to what I was experiencing when I first tested the unit.

No change

Annoying though this is, it is a job that needed doing and I’m now going to have to focus my attention elsewhere. I’ve checked the polarity of all the capacitors and I’m confident they are installed correctly and in the right positions. There are a few tests and checks to yet carry out, I’ll just have to do a bit of investigating to take this repair further.

These boards and their components such as the main chips and ram were developed to work with a power of 5 volts. However the problem here is that the supply via batteries or via an external power supply is 9 volts. Here lies the issue. On these units the power suppression part of the circuit, those components that filter and lower the voltage from 9v to 5v were known to fail, and when they did they failed quite spectacularly. With no protection built in to stop a surge of power, if some did fail, the full 9v would be supplied to most sensitive components rendering them beyond useless, and non repairable unless you have another donor board. Worst case scenario here is that the main CPUs of which there are two, could both be dead. In which case I may have purchased an expensive paperweight! But hey, let’s not go there just yet as there are a number of things we can do to check.

Next thing I have been doing is testing voltages around the board, and they are a little erratic to say the least. It is pointing towards the power board having its usual known issues. I’ve bypassed the power circuit to run a pure 5v through capacitor C14, same outcome here, this disappointed me as I was hopeful the game would kick in, it’s looking more like one of the chips have blown, the further I investigate.

I have done a bit more testing around the power components and I have definitely found an issue with a diode D13, it’s letting power through in both directions and this is not right. I suspect there are more affected components in this area so I’m just going to go ahead and purchase a complete pack of replacement components for those known and prone to fail, on the power circuit. This will cost me £6:79GBP, another cost to add to this project.

The failed diode D13
Same reading in either direction

I’m not hopeful though. Current testing results are all pointing to something more terminal. We will persevere for the short term though.

The parts required for the power board refresh have arrived.

6 of the tiniest replacement parts

And they are minute in size. Installing these components is going to require a lot of patience and concentration.

The company that sell this power board refresh kit in the UK is ZedLabz.com and this is what their accompanying paperwork states:

Within this kit you will find a replacement Mosfet, two transistors, a resistor and two zenner diodes of different mounting types.

Part locations:

Q11 – Mosfet

Q4 & Q13 – Transistors

ZD1 – Zenner diode (two mounting types included)

R56 – Resistor 30ohm

This parts kit can be used on an Atari Lynx 1 or 2 handheld. One surface mount SMD and one axial through hole zenner diode are included, making it suited to both Atari Lynx 1 & 2, you can choose which type of diode you want to fit.

The kit also includes a resistor which can help with some models to push up the voltage enough to get it stable.

The parts we supply in this kit are from Major distrbutors only ensuring they are genuine.

Console dissasembly and internal soldering required.

ZedLabz.com

No kidding there! It should really say some soldering of components slightly smaller than a grain of rice is required. Let’s stop the whining and just get on with it.

I have replaced all of the five components that needed to be replaced, I’m really quite pleased with the job I have done considering just how tiny these components are, my soldering skills appear to have improved somewhat as a year or so ago I wouldn’t have even attempted such a job. That’s the positive.

But now the negative.

It’s Dead, very dead.

There is still no improvement despite pretty much an entire rebuild of the circuit. I have checked all voltages and they are in the right place showing the correct values. It’s been recapped, the power board has been rebuilt, all solder joints have been checked and ribbon cable connections have all been reflowed.

Result:

My conclusion that the previous owner was well aware of the issues, they probably contributed to the problem and the unit has been sold on as “spares and repair only”. I have failed to pay attention to the old Latin saying “Caveat Emptor” or buyer beware.

The situation is this. A new LCD screen can be purchased to drag the unit into the 21st century, but there is no point when we have no sound and vision being produced. The problem here is that the 9v power supply has already been able to get to the delicate parts of the circuitry where only 5v should be in attendance. I am 99.9% certain that the ram chips as well as the two logic chips “Mikey & Suzy” have long departed. And there lies the problem. The two logic chips are as rare as hens teeth and are pretty much only available when transplanted from a donor unit. The unit is basically dead, it’s just a paperweight.

I will put the unit into storage until a later date, when I have done a lot more research and who knows I may even find a suitable donor board to transplant those two logic chips.

For now the project is on hold. I don’t like writing of failures as many hours of work over many weeks has been dedicated to this project. You can’t win them all though, and some you just have to step away from a project to get a fresh aspect on it. Having this log of activity is fantastic for me though as it will now become the reference for where I go next.

It’s a learning curve, that’s for sure.

When I come back to the project I will obviously link to this post.

Thanks for passing by. It’s always very much appreciated.

MONOPOLY ELECTRONIC HANDHELD GAME

A dead Monopoly electronic handheld game from 1999. Can we resurrect rich Uncle Moneybags?

What the listing stated:

The Vintage Monopoly Electronic Handheld Game from Hasbro (1999) is a classic electronic game that allows players to enjoy the iconic Monopoly game on the go. With its handheld design, this game is suitable for players aged 4 years and above, making it a fun and engaging activity for children and adults alike. Although untested, this nostalgic piece of gaming history is sure to bring hours of entertainment to anyone who enjoys the challenge of a good game of Monopoly.

EBay.

The item I have purchased

The good old EBay get out of jail free card (How appropriate 😂) of untested. This item takes three AA type batteries, just what does it take to pop three battery in and turn on the unit. Why am I so sceptical about this item? I just have a feeling that it’s going to be riddled with issues and I bet one of them involves battery acid.

But, miracles do some times occur, so let’s just await its arrival so I can carry out a full assessment, in the meantime here is a little bit about this game.

The 1999 Hasbro Monopoly Handheld game is a classic electronic version of the board game designed for solo or multi-player action. It features computer-controlled opponents, a virtual LCD board, and an interactive narrator (Rich Uncle Pennybags) who guides you through buying, trading, and auctioning properties.

Gameplay Features

The 1999 handheld faithfully recreated the full experience of the classic board game in a portable format. Key highlights include: 

  • Computer Opponents: Play against up to 3 to 5 distinct, computer-controlled characters (like Diamond Jim or Greedy Granny), all of which operate at different skill levels.
  • Full Board Mechanics: You can buy, sell, mortgage, trade, and even auction off properties.
  • Audio & Visuals: Features a custom LCD display, physical buttons for menu inputs, and fun real-sound effects.
  • Power Requirements: The unit typically requires 3 AA batteries to operate. 

T’internet

Assessment:

Well, my suspicions in this case are correct. It has arrived and for a unit that is now 27 years old I must admit that cosmetically it is in a good looking condition, with all labels intact, minimal marking on the screen, and all buttons appear to be clicking. All body screws are present and do not appear to have been tampered with at anytime.

Clean, tidy
All labels present

But hold on, what’s that I can see through the speaker grill on the front?

Battery contaminant viewed through the speaker grill.

I open the battery company and as I previously thought there are signs of battery contamination.

Battery contamination

Bugger. Ok I’ll put three batteries in but I’m pretty sure I know the outcome. Yep, it doesn’t power on. The unit is dead.

An untested unit. It’s taken me 30 seconds to test and confirm the issue. Wouldn’t have hurt to be honest and to have done the same would it?

I paid £7:90GBP for this unit, it was probably the least expensive of all those available at the time, I guess I can’t complain really, I just detest people’s deliberate dishonesty. Ok, whinge over let’s open up the unit to delve a little deeper.

I open the case and can breath a slight sigh of relief. Yes there are obvious signs of battery contamination, but not as bad as previously thought. As I had seen signs of contamination in the external speaker grill, I’d thought the insides were rotten. In fact the contamination in the speaker grill was only a few grains of contamination that had broken away from the battery compartment.

A rogue piece of contamination
Wires rotted near the connector
Jumper cable broken
How it looked upon opening

The wires near to the worst points of contamination in the battery compartment were pretty much rotted and covered in old battery acid. One jumper that would complete the continuity of the battery/power flow had rotted off and one of the very thin speaker cables was also broken.

Repair:

I’ve given the mainboard a good clean with IPA and set about removing all the battery connectors from the battery box.

Old connections out
A thorough clean of the area
New connections in

I’ve reattached the jumper cable with some fresh wire, I’ve trimmed the rotted wires down to some good unaffected wire and reattached these to the new battery connectors. The speaker wires are freshly soldered back into place.

New jumper
Hello rich uncle moneybags

With everything now connected up I put three batteries in to place and can instantly hear the computers electronic voice welcoming me to Monopoly, Rich Uncle Moneybags lives again.

Time to reassemble the unit.

So the issue was here was the result of battery contamination. Four battery contacts, and one wire, were all that were additionally required along with a lot of cleaning and some re soldering to secure some weak connections. It’s now a complete working unit.

Result:

As usual, this would have been a prime target for the tip as it’s just one of those disposable units we have created as the wonderful guardians of this little planet we reside upon. It’s taken probably about 30 minutes of time to repair (and about the same to clean internally) to bring this unit back to life. A good polish externally and it’s now ready to be put back into use.

All cleaned and looking good

And my chief tester for these type of items is my wife who absolutely adores the game of Monopoly.

The only real issue with these units is that they never came with an on/off switch. You had to put the batteries in and then remove them when you were finished, this is very strange. However when you read up on line you can see that many people have made modifications to put volume controls (even though there is a three press button version built in) and on/off switches on the unit. I will probably put a switch in myself when I come across a suitable one to use.

In the meantime we now have a working unit, the wife gives it her nod of approval and that’s good for me.

A simple repair, very little outlay and only a little time was all that was required to save another item from landfill. Wouldn’t it be good if we could all take the time to repair rather than dispose.

Thanks for passing by, as always it’s always very much appreciated.

Sega Mega Drive AT Games Portable Arcade Gamer

From 2008 this is an AT Games, Sega Megadrive portable games unit. It’s an emulator console that has seen better days. It needs a lot of attention. Let’s see what we can do.

What the listing stated:

I can’t get the device to power on. This is possibly just due to corrosion (and one snapped spring) in the battery compartment. Someone more adept at fixing things may be able to bring it back to life but unfortunately I can’t so listing it as spare/repairs/faulty.

EBay

I sure as heck wasn’t going to pay the old price advertised when the previous owner obtained this from Cash converters.

Front fascia
Rear fascia
I think there may be a problem here

Let’s just say I paid considerably less than the price tag on the rear of the unit.

These handhelds were sold as emulation devices usually preloaded with games, between 20-80 games were the norm, I believe this is a 30 game option, if the information that is left of the previous price tag is to be believed. They were originally sold within the UK by the national retailer – Argos, and it originally retailed at a price of £29:99GBP.

A little about these units:

The AtGames Arcade Gamer Portable is a licensed, handheld “console-on-a-chip” manufactured around 2008. Despite the common inclusion of “Mega Drive” in some regional retail listings, it explicitly emulates Sega Master System (8-bit) and Sega Game Gear games rather than 16-bit Mega Drive/Genesis titles. 

Game Library: Features 30 pre-loaded games. Notable titles include Sonic Triple Trouble, Sonic Chaos, Alex Kidd in Miracle World, Golden Axe, Ristar, and Tails Adventures. 

Hardware Limitations: It relies entirely on emulation software and lacks a traditional cartridge slot. The d-pad and face buttons feature a modern 6-button layout, despite the underlying 8-bit games only requiring two active buttons. 

Audio & Video: Uses a built-in mono speaker and a bright 2.4″ color LCD screen. It can plug into standard TVs via an AV output port, but it does not support modern HDMI connections directly.

Google

So here we have an unhealthy unit from 2008 requiring quite a bit of work, if it can even be repaired at all. It may just be too badly damaged to have a successful outcome.

Why am I wasting time on what was a relatively inexpensive item in the first place? And there lies the crux of the issue, in our throw away society this is the attitude we’ve all come to expect and to live by. It’s not a good attitude, there are probably millions if not billions of similar items world wide that have suffered the same fate, “it’s knackered, just chuck it and we’ll get another”. It’s a bad attitude that we need to step aside from. If I can at least reverse the attitude of one person and get them to explore the possibility of a fix to preserve an item and to save it going to waste, then I’ve achieved my goal. That’s why I’m wasting time on it.

Let’s await its arrival though, so I can carry out a full assessment.

Assessment:

It’s arrived. It’s looking a tad tatty as expected, and those battery terminals are totally corroded. I’m not going to put any power into it at this point as I know there will be no response. I just hope the corrosion doesn’t go much deeper. This is all rust, not battery acid.

Looking well used
Old stickers
Missing screw
Top controls
Bottom ear piece socket
Look at that rus
Everything here is rotted

We’ve got to get the case separated so that we can review the surprises inside that I suspect are waiting for me.

Repair:

With the cases separated the extent of the damage can be seen. The rust has also completely damaged the two terminals on the main board.

The back of the main board
Rusted positive terminal
Both terminals destroyed

My main concern here is that directly below the terminals is the screen. I’m hoping the source of the problem hasn’t gone any further.

And luckily the terminals are where the rust issue ends.

Screen area and front of board
Rear, damaged area

Ok, first thing I do is remove the rusted battery terminals from the battery compartment and then give the internal shell a thorough clean. I then install fresh terminals and add a couple of jumper wires as I don’t have and double type battery contacts. This is more than sufficient.

Corroded contacts
Shell cleaned
New contacts
New contacts
Jumpers added each end as I have no double terminals

Next I need to get the two terminals off of the board, I use a soldering iron for this, and as I’m going to produce a little heat in the area I mask the area between the battery contacts and the screen with a little Kapton tape to give some protection, I could have removed the screen completely at this point, but as I was using the iron and not hot air I didn’t class it as necessary.

Kapton tape under terminals

However, as I removed the two terminals, it became obvious that I would have to remove the screen as the old terminals took the connector pads with them and damaged some of the traces. I was going to have to carry out a more complex repair.

The old contacts with pads attached
New negative contact
New positive contact

The contacts had to be fastened from the rear of the board, so for this reason it was good that the screen was removed. The screen is quite delicate and is secured to the board with a ribbon cable that had to be detached, and double sided pads that had to be manipulated to release the screen from the board.

I did some testing with the multimeter and there was a good contact on the earth side. However the positive side was dead, no response. Closer examination of the board under the microscope showed that the trace between the positive terminal and a nearby Via point, shows that the trace had also been removed severing continuity. Using a grinding pen on the appropriate Via, allowed me to expose some copper, I was then able to use some flux and apply the tiniest dab of solder. The next stage was to utilise some trace repair wire, only 0.10mm thick. This is like trying to solder a piece of hair, it really is that thin. I was able to connect the wire from the base of the positive terminal to the via and testing proved that the continuity had been restored.

That tiny 0.10mm trace repair

I tidied this area up by adding a touch of UV curable solder mask, to protect that very thin wire from corrosion or being caught while re assembling. It cures in just over a minute under a small UV light and becomes quite solid. It’s good for this purpose.

So now that all continuity on both the negative and positive sides has been restored, I just connect the battery chamber for a quick test before reassembling it all.

And it works.

It springs into life

We have sound and we have vision. All that is needed now is to fully assemble the case to see if all the buttons and connectors are working as well.

Result:

And they are. A quick test shows that all buttons and connectors are in a perfectly good working order, a quick polish and this unit is looking good.

Front
Rear
Top
Bottom
All games appear and play fine, sound is excellent.

Really pleased with this repair, it was in a very sorry state of repair. However a little persistence and time and I have brought this little unit back to life.

I can understand the seller wanting to dispose of it and I suspect if it hadn’t of sold it would be on its way to landfill. I’ve prevented that and it’s a small win for me as this game will now go on to be used for a few more years to come.

A good result, a good repair and a happy me. Who could ask for more.

Many thanks for passing by. It’s always very much appreciated.

Gameboy Advance

Another one of Nintendos mass produced hand held gaming systems has arrived, with audio issues. It’s a Gameboy Advance, with no sound,so let’s try to fix it.

Here’s what the listing stated:

Gameboy advance console, complete with battery cover, all buttons works and powers on but no sound, has marks on screen and a few marks on shell and scuffs/indentations.

Photos of exact item you will recieve, FAULTY Uk buyers only. Has cover missing that the power light shines through on

EBay

The unit I have purchased

I’ve purchased this as another addition to my collection of handheld retro gaming consoles. As usual it dosen’t work, and that sometimes keeps the cost down a little. This one has cost me £24:00GBP and I’m happy that that is a fair price for one of these units. Here’s a little about the GBA:

The Game Boy Advance (GBA) is a 32-bit handheld game console, manufactured by Nintendo, which was released in Japan on March 21, 2001, and to international markets that June. It was later released in mainland China in 2004, under the name iQue Game Boy Advance. Compared to the Game Boy Color it succeeded, the console offered a significantly more powerful ARM7 processor and improved graphics, while retaining backward compatibility with games initially developed for its predecessor.

The GBA is part of the sixth generation of video game consoles, competing against Nokia’s N-Gageand Bandai’s Japan-only WonderSwan. The original model was followed in 2003 by the Game Boy Advance SP, a redesigned model with a frontlitscreen and clamshell form factor. A newer revisionof the SP with a backlit screen was released in 2005. A miniaturized redesign, the Game Boy Micro, was released in September 2005.

By June 2010, the Game Boy Advance series including revisions, had sold 81.51 million units worldwide, massively outselling its competitors. Its successor, the Nintendo DS, launched in November 2004, was backward compatible with GBA games. GBA sales ended by 2010 after over nine years.

In 2008, the GBA was still Nintendo’s predominant handheld console in terms of market presence and global installed base. It was only in late October 2008 that Nintendo announced that the Nintendo DS had officially surpassed the GBA worldwide in sales. This milestone consolidated the definitive global leadership transition between generations,[13]although in specific markets, such as the United States, the GBA was only surpassed by the Nintendo DS in sales in late 2009.

Wikipedia

Now just to reiterate. These units are now 25 years old, there were in excess of 81 Million of these units produced and they still command a good price today. Just consider how many of those units have been sent back into landfill, the figure is probably immense. But then again we produce many items en masse, and we have been just chucking stuff away for years. The figures must be mad.

Except for this one. It will be repaired, cherished and reused. And displayed for all to see.

This one has been advertised as having no sound. Just from viewing the sellers photos you can see there is an awful lot of staining around the speaker grill area, maybe some liquid has been spilled here and the speaker is damaged, or maybe the audio capacitor inside has blown. These are usually the two main culprits, but you never know it could be for some other totally different reason. Let’s not make assumptions, let’s see what turns up.

Assessment:

The unit has arrived all in one piece. The battery cover is in place, a little loose at the clip but I might be able to strengthen by heating and gently manipulating it.

It works but no sound
Battery cover
Clean contacts
Clean but a bit grubby
Connection ok, needs a clean
No sound, dirty
No light lens
Light scratches

Battery contacts show no sign of corrosion but are a little grubby. There are signs of good use but nothing really bad to be honest, all connectors and buttons appear to be doing what they should. The unit is in good need of a thorough clean, as it does look a little worn in that aspect. Screen has very minor scratches, nothing that will cause any issues. The little acrylic lens by the power light is missing and there is as stated, no sound even though we do have a picture and are able to play the games. In all aspects the unit is functioning, just with no audio.

This is a fair unit, it will clean up and if we can get the audio working we have a potentially very good unit.

It is dirty though, and a good clean will make an immense difference.

Repair:

The printer is on and warmed up so before we get repairing, let’s print a suitable display stand for this unit.

Display stand printing

Now let’s open up the unit and see what we have inside.

First there are seven tri wing screws securing the shell. Remove these and the rear of the unit just lifts off.

Seven screws
Rear removed. Board missing two screws

Next there should be three screws to remove the mainboard but there is only one. Someone has previously been in this unit and has left two screws out. Next we remove the ribbon cable that secures the screen to the mainboard.

Remove ribbon cable
Screen and front of the casing put to one side

We now have free access to both sides of the board and can put everything else to one side to start our fault finding process.

Rear of board
Front of board

First things first, let’s check the speaker. With the multimeter it’s showing 8 Ohms so I’m happy that the speaker is ok. A quick check for shorts and not one capacitor shows a short, I plug in a set of headphones and I can hear sound, but as soon as they are unplugged there is no sound again. My attention is now at the earphone socket.

Contamination
Headphones plugged in

On close examination other is a considerable amount of battery acid contamination in the earphone module. This is strange as there is none evident in the battery contact area. A close look around shows some spots of contamination, however these are easily cleaned with some IPA. I have a feeling this may have been a previous issue and the person in here prior to me, has cleaned up, but given up on the repair.

I remove the earphone module, and clean the surrounding area.

Front
Rear
Contaminated
See the blue contaminants

A simple check here is to see if there is any continuity between the two tabs that occupied positions 4 & 5 as marked on the mainboard. This check is carried out on the actual module. If you have continuity between these two pins, then in theory the circuit is good, and the speaker should be working. My results here were negative as there was no continuity on this module between those points.

The way the earphone works is thus. Plug the earphone jack in, it opens up the contacts and by passes the external speaker. Remove the earphone jack and the contacts close, opening up the main speaker. If there are contaminants on the contacts, this can prevent continuity and hence there is no sound on the main speaker.

You can double check that this is the issue by soldering a small wire between points 4 & 5 on the mainboard in theory by passing the earphone circuit leaving the speaker circuit open and accessible.

Short these two points
Shorted with a small wire

And my suspicions were correct, this small video below was the result of bypassing this part of the circuit.

We have sound in the speaker

Looking inside the earphone socket it was easy to see this piece had a solid lump of contamination exactly where I was expecting to see it. I have no spares of these and to obtain one off of the auction sites is an absolute ripoff. I can order one from our friends in China but I’m looking at a four week turnaround here, and I’m inpatient and not willing to wait that long. I’m going to try and repair it.

I’ve gathered everything up that needs cleaning, buttons, connectors, screws, pads and the suspect connector, and dropped the lot into a small dish of white vinegar. White vinegar is great for removing contaminants and you can actually watch it fizzing away and working. I left these items bathing for about 30 minutes before giving them all a good scrub clean. On the earphone jack I “borrowed” a small bottle cleaner from the wife, it fits right through one side and out the other allowing you to get a really good scrub inside.

White vinegar and a bottle scrubber

I also cleaned the outside thoroughly removing all signs of contamination, the tabs were gleaming when I finished. I then put everything I’d just cleaned in between two sheets of kitchen roll and put them in a cooling oven to dry off.

When dry I took the bottle cleaner again, inserted it back into the earphone jack, sprayed quite a bit of electrical contact cleaner back onto it and vigorously scrubbed again for the next few minutes. When dry, I took the multimeter and again checked for continuity across points 4 & 5 and a tone was heard. Continuity had been restored and the earphone contacts were now working. Plugging in a jack and then removing it confirmed that all was working as it should. It’s now time to put this jack back on the board.

Earphone port, back in place

Final touch is to put a tiny pice of clear silicon in place of the missing power light lens on the front of the case. Job done.

Time to reassemble this unit.

Result:

And here we are. The original unit has been thoroughly cleaned, it’s come up ok but is probably a good candidate for a case upgrade and a Capacitor change at some point. That’s just cosmetic though, what really matters is that this unit is now working perfectly, and it sounds just fine.

Fixed, cleaned, on its new stand with its fellow Gameboy counterparts

This unit actually came from a guy who restores these units, I guess he was just having an off day as to be honest, it wasn’t the most difficult issue to diagnose and repair. It honestly took longer to clean this unit than it did to repair it. I’m pleased that I’ve used all the original parts and just been able to do a proper restoration as such.

81 million of these units were produced, so this is just one in that 81 million, that has been saved again from landfill to be enjoyed for many more years to come.

Thanks for passing by. Always most appreciated.

Nintendo Gameboy color console

I’ve purchased a faulty Gameboy Color for my collection. It has no power, so let’s have a look and try to get it working again.

What the listing stated:

Very clean, but doesn’t turn on

EBay

Gameboy Color

Yep. It’s a Gameboy Colour to me, but as it was sold using the American spelling of “Color” then that’s what it will be addressed as, going forward.

I’ve been after a “Color” to add to my collection for a while now, but it had to fit my very strict quality requirements, in truth it just has to be faulty, and this particular example has met my conditions. I’ve paid £30.00GBP for this example and I’m happy with that, it’s a very fair price.

The good news seems to be that it is in a really good condition, it looks as if the battery door is missing, however they are freely available and this is not an issue should I require one.

These units are known to sustain power failures and the repairs are well documented. By now the unit is close to 30 years old and as time advances components start to fail, these include, but are not limited to:

  • Power switch failure: either a complete failure that requires replacement or quite simply a simple clean to remove years of tarnish and environmental gunk.
  • Fuse failure: there are two fuses F1&F2 that are known to fail, normally due to a short somewhere else on the circuit, but sometimes due to a power surge or incorrect addition of an incorrect power supply.
  • Via failure, small through the board connectors that are known to suffer with corrosion, requiring intervention with the addition of small wires to bypass the issue.
  • Capacitors – known to fail on a regular basis, it’s sometimes good housekeeping just to get these replaced as they are a contributing factor as to why other components such as the fuses also fail.
  • Worst case scenario: major corrosion or main board component failure.

We’ll cross these bridges when and if we need to.

Here’s a little info about the Gameboy Color console:

The Game Boy Color (abbreviated as CGB or GBC) is an 8-bit handheld game console developed by Nintendo. It was released in Japan on October 21, 1998, and in international markets the following month. Compared with the original Game Boy, the Game Boy Color features a color TFT screen instead of monochrome, a CPU running at up to twice the speed, and four times as much memory. It is backward compatible with games developed for its predecessor. The Game Boy Color was released during the fifth generation of video game consoles and competed with Bandai’s Japan-only WonderSwan, SNK’s Neo Geo Pocket Color, and Sega’s North America-only Genesis Nomad.

The handheld is slightly thicker, taller and has a smaller screen than its immediate predecessor, the Game Boy Pocket, but is significantly smaller than the original Game Boy. As with its predecessors, the Game Boy Color has a custom 8-bit processor made by Sharp. The American English spelling of the system’s name, Game Boy Color, remains consistent throughout the world.

Wikipedia

So, for now, let’s not speculate on its quality and issues until it arrives, when we can then carry out a proper assessment of the unit that has been received.

Assessment:

The package has arrived. The battery lid is missing as kind of expected, I will get a replacement sometime, but for the moment I’ll probably print one out on the 3D printer, it’ll be a totally different colour as I don’t have a “Teal” coloured filament to use. The product label on the rear is also damaged but I can easily get one of these as a replacement, however it’s not essential and will only be of cosmetic appeal.

Missing battery cover and old product label

The front fascia is in a good condition with only a minor scratch on the screen, however there are a couple of dents and dinks on the body where it looks as if it’s been dropped or bashed at some point.

Front fascia is good

All ports, switches, buttons and sockets look ok and seem to be operating as such with no resistance or signs of stickiness.

All ports appear ok, there are a few dents and bashes visible

Again, the casing is in general fit to use, and in no way causes any issues with its operation when working. It is purely a cosmetic issue that i can address when the unit is finally working.

I have installed two AA size batteries, switched the unit on and it is most definitely dead. Repeatedly flicking the switch does nothing at all, so it is a situation where the unit will have to be opened up and further investigated. The assessment has not thrown up any other issues not already highlighted in the sales documentation, so in general I am quite happy with the outcome at this stage. let’s get inside and see what we can find.

Oops. Wasn’t expecting that. I’ve removed the six “tri” screws and as soon as I’ve separated the two halves, an amount of what looks like battery corrosion “crap” has fallen out as well.

Oops – corrosion is present

With the two halves separated, I then remove the screen ribbon cable, remove three more screws and the main board lifts out.

Screen ribbon cable removal
Inside upper part of the unit

There’s some good news here. The contamination looks as if it has been completely isolated to within the battery area, there is no sign of any damage to the Vias, or any other components on the main board.

Main board on both sides, cleaned with IPA

I have obtained the schematic diagram for this circuit board for checking continuity, and i’ve been able to confirm there are no issues with any contamination damaging any traces to the board. We’ve been very lucky here, dodged a bullet, to coin a phrase.

Schematic diagram

I have removed a set of battery contacts from the battery area, and replaced these with a new set that I have in my spares box. I could clean these, but it’s good to remove all items that were originally contaminated and very possibly contributory to the fault we have today.

Old and new contacts
New contacts in place

I have also cleaned the front and rear of the main board with IPA just to ensure that if there was any issues with contaminants on the board, they’ve now been removed.

The switch has been tested electrically with a multimeter and this is working fine. The three capacitors have been looked over and seem to show no signs of wear or deterioration, they haven’t been properly tested though, so let’s now check fuses F1 & F2.

For reference: Fuse F2 protects the DC jack, whilst F1 protects the battery compartment. Using the continuity mode on the multimeter, a continuity through the fuse should present an audible buzz that let us know the fuse is complete and has not failed in any way.

I start on F2 and get a healthy buzz that tells me F2 is working fine. However fuse F1 is a different story, there is no continuity and there is no sound, I check again and can confirm that this fuse has blown, maybe this is a result of the contamination that was in the battery area?

The two fuses, F1 is dead

I’ve now attached the bench power supply supplying a 3v input to clarify the fault.

A 3v supply proves the fault

Fuse F2 has a 3v supply on each side, however our suspect fuse F1 only has a 3v supply on one side confirming that this fuse has blown. Once this fuse has been replaced I can check the voltage supplies on the remainder of the board, especially on the DC-DC regulator board, that supplies varying voltages from 3v – 13.6v required around the main board. On the main board the voltage regulator can be recognised as U5.

DC-DC voltage regulator U5

A quick check for short circuits doesn’t show anything of concern, maybe when the fuse is replaced it may well open up some other issues, the fuses I will be using are “resettable” fuses. These fuses seem to be the standard now for these units. Most resettable fuses—known as Polymeric Positive Temperature Coefficient (PPTC) or polyswitches—reset automatically and do not have a physical reset button. Once the underlying overcurrent or fault condition is removed, you simply disconnect the power source to allow the fuse to cool down, then you switch on again, if the same issue occurs, there is an obvious issue present that needs investigation, as stated above, once the faulty fuse is replaced I will be able to check other areas on the mainboard for correct voltages.

Just for information the fuse that needs replacing is approximately 4mm in width. You can see the scale in this picture taken alongside a ruler.

The tiny suspect fuse

Let’s get on with the repair.

Repair:

First off I’ve printed a replacement battery door cover. As stated earlier I don’t have any “Teal” filament so I’ve printed it out on a purple filament. For the purposes of practicality (holding the batteries in place) it will serve a purpose whilst carrying out the repairs.

The 3D printed cover in place

I have a replacement fuse, this work will now have to take place under the microscope as it’s just so tiny, think grain of rice size and you will understand just how small this component is, and it’s amazing that a component so tiny can completely shut down a unit such as this.

The supplied fuse is even smaller than the one on the board. If the original was 4mm then this one is probably around 1-2mm it really is minute. Here’s a comparison of them side by side on the microscope base.

Tiny and teeny tiny….

That said I’ve removed the old fuse, wicked away the old solder and applied some flux and a couple of new dabs of solder. Compared to these new fuses the solder looks massive, I can assure you it isn’t and is greatly magnified.

Pads cleaned
Two new blobs of solder
New fuse “B” compared to the size of its original counterpart “20”

With the bench power supply providing 3v I’m able to use the multimeter to confirm that the fuses are both working, however there is another issue and I suspect it is something I discussed earlier, but omitted to heed my own advice, about good housekeeping. I’ll come to that in a second.

Power is getting around on the 3v rail and is not an issue. However at the Dc converter I’m not getting the 5v or 13.6v rail, so there is another issue. The new fuse has dropped out again, and this is good as it proves it works. I let it cool for 30 seconds and it is back up and working and I’m able to continue tracing the fault. The big capacitor C32 that sits beside the DC-DC converter appears to be carrying a short, it is probably this that has caused the fuse to previously fail.

And my good advice was to change these capacitors for good housekeeping purposes…..and I didn’t.

Guess what I will be doing next?

There are three Capacitors on the main board and below you can see what their primary functions are:

  • C32 (Main Power / DC-DC Filter): 100µF, 6.3V (Filters the incoming voltage; if faulty, the system won’t boot or will repeatedly reset).
  • C35 (LCD Display Filter): 22µF, 16V (Stabilises the voltage to the liquid crystal screen; if faulty, it results in a dim or washed-out image).
  • C38 (Audio Amplifier / Sound): 100µF, 4V (Powers the speaker and headphone output; a failure here is the leading cause of whisper-quiet audio).

Ok. Fortunately I have plenty of capacitors in my spares box so I was able to replace the three capacitors with no issue.

Faulty power Capacitor
Cleaned and ready
All three Capacitors replaced

This done I then decided, prior to any reassembly to see if the power was now being distributed as it should, and I’m pleased to say it is. We have the full range of voltages now coming out of the DC-DC converter.

All expected voltages now present.

Now let’s get the unit reassembled, cleaned and then get some tasty pics taken👍

Result:

To finish it off and whilst the 3D printer was still warm, I’ve printed a simple brightly coloured yellow display stand to show it off on.

A new printed display stand

After a good clean the unit is now in a perfectly good working order. The fault appears to have been the faulty capacitors and battery contamination all probably combining to make the power fuse fail, a perfect storm if you like. The fuse and three capacitors have now been replaced to breathe new life into this game console. Cosmetically it’s still tatty and would probably benefit from a new outer shell and some labelling, however it works and to be honest that is all that really matters.

A small video showing the unit working
Looks different but it works, it’s just a patchwork quilt of a project

I wonder how many of these items just get thrown away because they don’t work? This probably took me about three hours in total with diagnostics and repair. Another piece of retro history restored, now joining my original Gameboy classic as part of my collection.

It’s been a pleasing little project, enjoyable and educational and it’s always good to hear the familiar beeps when it springs back into action.

Another one saved from landfill.

Thanks for passing by, as always it’s very much appreciated.

Dell Axim X50V Handheld

A pocket computer from 2004 that needs a little attention. Let’s get it working.

What the listing stated:

Dell Axim X50V Handheld PDA with Windows Mobile 2003 SE. The PDA is in a used working condition and  advertised as for spares or repair due to a faulty battery cover switch, It is also missing its rubber feet and SD slot cover.

The Battery has recently been replaced.

Comes complete with the following.

Desktop Cradle

Power Supply (Damaged lead, please see photo)

Windows Mobile 2003 Second Edition Companion CD

3D Game Pack for Dell AXIM X50V

Please see photos for overall condition.

EBay

The purchased Dell Axim X50V

Here’s some info regarding these units:

The Dell Axim X50v was a high-end Personal Digital Assistant (PDA) released in late 2004. It was a flagship device in the Axim line, notable for its advanced multimedia capabilities, specifically its VGA screen and dedicated graphics accelerator.

Key Technical Specifications

  • Processor: 624 MHz Intel XScale PXA270.
  • Display: 3.7-inch transflective VGA TFT color display with \(480 \times 640\) resolution.
  • Graphics: Intel 2700G multimedia accelerator with 16MB of dedicated video memory.
  • Memory: 128MB Intel StrataFlash ROM and 64MB SDRAM.
  • Operating System: Originally shipped with Microsoft Windows Mobile 2003 Second Edition.
  • Expansion Slots: Dual slots featuring one CompactFlash (CF) Type II and one Secure Digital (SD/MMC) slot with SDIO support.
  • Connectivity: Integrated 802.11b Wi-Fi, Bluetooth 1.2, and Infrared (IrDA).

Features and Performance

  • Multimedia & Gaming: The Intel 2700G chip allowed for smooth 3D gaming and high-quality video playback, which were advanced for its time.
  • Design: Compared to previous Axim models, the X50 series featured a sleeker design with rounded edges and a curved base.
  • Battery: It uses a user-replaceable 1100 mAh Lithium-Ion battery.
  • Software Upgrades: While an official upgrade to Windows Mobile 5.0 was released, some users found it ran slower than the original OS due to the slow NOR flash memory used in the X50 series.

Multiple on line sources

Let’s await its arrival to see what we have.

Assessment:

The package has arrived, very well packaged. I have enough bubble wrap now to to last for quite some while.

The item turns on, and appears to be doing what it should and then without even touching the back of the unit, an error appears on the screen.

A common fault apparently

On the cable directly from the charger unit there appears to be some damaged cable sheath. I have tested the power output and flexing this area does not cause any interruptions to the power supply, it appears to be that only the external earthing of the cable is exposed, so I am happy that it will be fine to just apply some heat shrink tubing to this portion so that the cabling inside is no longer exposed. It looks as if at sometime someone has probably used a knife instead of the correct tooling to access the unit.

Exposed earthing

There are a couple of rubber feet missing, that just so happen to cover screws that allow access to the unit, further strengthening my suspicions that this unit has been previously accessed internally.

Missing rubber feet

The battery is new, and is holding a good charge of 4.16v at an indicted 100% indication, and it is rated at 3.7v so this appears to be a healthy battery.

Battery holds a good charge

Cosmetically this is a nice unit for its age, it has a stylus pen included, along with a charging cradle and original software that came with the unit. There is a small SD card slot cover that is missing, however this is not an issue as I will probably install a small SD card to fill that void. It can also take CF cards and there is also a blanking plate installed to fill that portion of the top of the unit.

Let’s get repairing…

Repair:

I’ve gone straight in at the charger cable and have chopped the offending portion out. I’ve had to do this to be able to get some suitably sized shrink tubing in place. With the wires exposed I strip them back, tin them with some solder and, then finally connect them back together ensuring they are suitably insulated from each other, and safe and secure. It doesn’t look pretty, but it’s safer than it was.

Chopped out section
All insulated and heat shrunk

I’ve tested the output with a multimeter and the output is around 6 volts as stated on the power pack, so no issues there.

Charging indication
Charging complete
100% charged

With the charging cable all sorted it’s time to look at the error message problem associated with the battery latch.

The Dell Axim X50v battery latch often degrades, triggering a false “battery door open” warning or sudden sleep mode shutdown. If your device is frequently going to sleep on its own or reporting a false “battery door open” error, it is typically caused by a loose, dirty, or misaligned latch switch inside the device.

There are a number of options we can go through to attempt to alleviate this issue:

  • Clean the Contacts: Power down the device, remove the battery, and gently clean the small plastic sensor switch and surrounding contacts inside the battery cavity with a cotton swab dipped in isopropyl alcohol.
  • Mechanical Shim: Over time, the plastic door can warp, failing to press the microswitch down. By placing a tiny, folded piece of paper inside the microswitch channel to force it into the “closed” position. Then snap the battery door into place.
  • Permanent Bypass: For an advanced fix, you can bypass the switch entirely by soldering the connections or using conductive paint to bridge the gap on the motherboard, ensuring the system always thinks the door is closed.
  • Replace the Door or Latch: If the physical latch or door is broken or entirely missing, replacement battery doors can still be sourced from specialty PDA parts sites.

Taking the above suggested remedial actions into consideration I’m going to approach this repair combining two of the above suggestions. Firstly I will clean the contacts as in the first option, this is standard work practice for me. I will probably use a contact cleaner rather than IPA in this instance. I will ignore suggestion number two, as that’s a temporary “Bodge job” fix that should only really be used to test for an issue. The third suggestion of the permanent bypass is what I will use should action number one not be successful, the error is one of those pain in the butt errors that are really unnecessary, and serve no real purpose at all, so let’s permanently disable its ability to reappear. The door itself is in a good order and does not require replacement therefore cancelling out suggestion number four.

So. To recap I will go with suggestions one and three.

Let’s get going then….

Four small star screws are all that need to be removed to get the shell open. Inside everything looks lovely and clean and there sitting at the bottom of the main board is the tiny switch that is causing the issues.

The switch that’s causing the issues

Immediately opposite this switch on the battery panel switch is a small piece of felt that I presume was originally set in place to hold the switch down.

The tiny piece of felt

Well, it had moved and was sitting in the wrong place. I’ve cut a small piece of felt that I use for repairing light seals on cameras, cut this to size and placed it in the correct position. The small switch is like a rocker switch, I have cleaned this with IPA and it is now clean. A quick clean around the main board and now it is time to reassemble.

Now all back together, battery now in place and the unit switches on fine. A little shake of the battery panel cover, and no error message appears. In fact no error message appears until I physically open the battery panel, but once it is put back in place and locked it again, the fault clears. The repair as such has been successful. You can see in the picture below, the battery error at the top of the screen, that results in a restricted use, until it is cleared. A standard fault with these units, now repaired.

Fault
No fault

Everything is working fine on this unit, it voice records, the stylus is present and I have all the original software. It’s year 2K compliant and is working as good now as it ever has, the only items I have not replaced are the two small rubber pads used as feet. Not really necessary and if I ever find anything suitable, I’ll utilise it.

I’ve given this unit probably the best soak test it could ever be given, a rather long session playing original solitaire with my wife. She’s played for a little over an hour solid now and no error codes or faults have appeared.

The ultimate soak test

I’m happy we have a good working item, resurrected from impending doom in a landfill. Let’s get it cleaned and finished off.

Result:

The unit has cleaned up nicely, and for an item that is 22 years old, pre smartphone technology, it has aged really well.

Looking smart

I just love these items from probably the best tech area there ever was, 90s through to year 2k and just beyond. Technology was developing, it was new and exciting with lots of choice unlike today.

It gives me a chance to now go back and buy the items I’d never be able to afford as a youngster/teenager, even though they may be broken. And that’s the fun of it all, learning, repairing and enjoying a momentary rerun of good times gone by.

I love it. And another item is repaired, saved from landfill and another piece of tech history goes on for others to enjoy for a few more years to come.

Thanks for passing by. It’s always very much appreciated.

HP Jornada 540 Series PDA Pocket PC

I have two faulty pocket PC units that I can hopefully combine into a “Frankenstein” unit. Can we get at least one of them working again?

What the listing stated….mostly AI produced I guess?

Untested, no charger, docking station only by Hewlett Packard

32MB Jornada PDA 540 Series Pocket PC Windows & Docking is a highly functional device that comes with some amazing features. This device is perfect for individuals who desire a highly efficient PDA Series. The device is sold as untested and is compatible with the Windows operating system. The brand of this device is HP, which is a well-known brand in the tech industry. The PDA Series is HP Jornada and it comes with an installed memory (RAM) of 16 MB. The display size (pixels) and screen type are unknown, but it has a model number of 540. This device comes with a docking station that allows ease of use for individuals.

EBay

HP Jornada 540 series (545) PDA
And this is my original old 540 (548) Jornada.

I just know this is going to be a challenge, and to be honest i will have two of these when this one arrives. This is the 16 mb version, released in Mid 2000, currently aged at around 26 years old. I’ve had a dead one sitting in one of my junk drawers for a couple of years now and I though it would be a good challenge to get at least one of them working again, another one of my Frankenstein projects if you must. I have no charger for these, the chargers are priced at a premium with the online pirate community, (Robbing swines!) so I will just have to make do. At least with the docking station that this unit has I have somewhere to start from. I suspect both batteries will be dead so I may have to use some jiggery pokery to get some power into their circuits to see if we can get any signs of life.

It’s safe to say at 0.5mA my old units 3.7v battery is very dead

But whilst we await the arrival of this unit, here is a little bit about this PDA:

The Jornada was a line of personal digital assistants or PDAs manufactured by Hewlett-Packard. The Jornada was a broad product line that included Palm-Size PCs, Handheld PCs, and Pocket PCs. The first model was the 820, released in 1998, and the last was the 928 model in 2002 when Compaq and HP merged. The Jornada line was then succeeded by the more popular iPAQ model PDAs. All Jornada models ran Microsoft Operating Systems that were based on Windows CE.

Jornada 540 series

The HP Jornada 540 series, including models 545, 547, and 548, was released in July 2000. As one of the original Pocket PC platforms, it featured a 12-bit color display, 32MB RAM, and USB connectivity running Windows CE 3.0.

The Jornada 540 series was one of the original models of Pocket PC, when the platform was first announced. Sharing the Operating System, CPU and memory card slot of the 520 series, it featured a 12-bit display (originally advertised as 16-bit display) and USB connectivity. Two models were made available that were identical except for the amount of RAM. The 545 had 16 MB RAM and the 548 had 32 MB RAM.

Wikipedia

Assessment:

The old one I originally had is in fairly good condition, only displaying age related wear and tear. It has its original touch pencil, and is pretty much all there. Its battery (a 3.7v Li-ion) is very dead though (see pictures above) I have no means at present to see if I can charge the battery.

My original old unit

I have however found a charging alternative that will not break the bank. I have found a chap in Germany called Edgar, that runs a business selling cables and peripherals for older units, as well as more up to date systems, his shop is in Hannover and his company is: systemhauszakaria.com. I have managed to get a USB charging unit called a System-S USB Charging cable, that has the connectors required for this unit, and being a USB cable I can use a suitable plug for the mains supply , if required.

The System-S USB charger cable

The cable includes a data transfer cable that also fits the unit, however my main task is to try and get some power into these units.

Let’s give it a go.

I’ve used the new lead, left the unit on and monitored it for about 90mins, and it does appear to be taking a charge. An Orange light indicates that charging is taking place.

Charging unit

The unit displays as 100% charged with the charging lead in. when disconnected it drops to about 50% but within a couple of seconds it shows as 100% again, this could be a time delay of some sort whilst switching to the battery circuit.

On charge
On battery power

At this point I thought it would be worth getting the back off again, to check the battery charge. If you remember earlier in this post, this old unit that had sat unused in my desk for the last couple of years and when last tested the battery was dead at about 0.5mA. However this is a transformation, as when the battery was now tested its voltage was 4.09v. Now, a 3.7v Li-ion battery such as this should have a max charge voltage of 4.2v, so in theory this battery is in quite good condition considering its age. There may be a little deterioration, however considering this battery is possibly 26 years old it’s held up very well.

Before charge, and after

The unit will be left for a while to see how the charge holds. 10hrs later, untouched and off charge, I can confirm the power is still indicating 100%, this pleases me as it shows the battery is still good and has a good life inside of it. Very pleasing for what is potentially a 26 year old battery.

The new unit has now arrived and I’m surprised it got here after being posted in a couple of old carrier bags, no padding just a couple of old bags. I suspect the seller wanted it off his hands, they probably had little faith in it ever working again.

Poorly packaged to say the least

However, despite this, the actual unit appears to be in quite a good condition. It’s free from dinks and scratches and both the unit and the charging cable appear to be in a good order.

The new unit and charging cradle

Now, the good thing is that both these units have their original touch pencils. This cradle has a cable connected to it and a USB socket, however that USB socket is for data transfer and not charging. To charge, the new System-S USB cable has to be connected in line. The cradle will then charge. And it looks as if it is doing just that.

This time i have connected the new unit and cradle to a Power bank charger to see if this works, and it appears to be doing just that. It drained the power bank quite quickly, it only half charged, I’ll have to put it back on the household power tomorrow to fully charge it and check its battery capacity.

Tomorrow has arrived and the unit has been on charge for a couple of hours and it is indicating as fully charged. Back on the bench with the back off I can confirm the battery charge is reading at 4.08v so it is pretty much the same reading as the other unit.

New unit and cradle with power bank charger

These two units are both of the 540 series however the newer one that came with the cradle has only 16MB of memory (The 545) whereas my older one (The 548) has 32MB of memory. It appears that HP created three variants in the 540 range and I now have two of them. The 545 had 16 MB RAM and the 548 had 32 MB RAM, the one that escapes me, the 547 was also a 32MB variant. (I’m going to have to get one now just to complete the set)

545 on the left, 548 on the right

Repair:

Less of a repair and more of a resurrection to be fair. I said it would be a Frankenstein project, and that’s exactly what it has been. Both units have charged well despite my concerns, they have been charged in a monitored environment and neither are showing signs of overheating, irregularities or any battery swelling or other issues. The battery management system on both batteries seems to be doing its job, and doing it very well.

I’m going to use this section to test some of the functions, to look at the installed program package and at the same time monitor battery usage along the way.

And as with all my projects, a thorough clean of the units is going to be carried out, it’s just got to be done.

But first I’m going to leave these units for a few days to see if the batteries drain.

Three days later

Three days later it’s good to see that when turned on, both units are holding a similar, slightly discharged reading that is to be expected. I’m pleased at this, and it appears that both batteries are holding out well and working very well after a long period of inactivity.

Left again for a couple of more days and both units are now prompting me to accept that the UK has now turned to daylight saving time, (as it has) and this is another good sign that shows that all is working as it should be.

What am going to do with these units? Please don’t ask me that as I just don’t know. I’m probably just going to use them for note taking, maybe for a to do list for my work room, but in reality they will probably just get stored in a sealed bag with some silica bags to keep them dry, until I either move them on or find another use for them.

Good job 👍

The package originally installed on these units consisted of the following:

  • Microsoft Pocket PC Suite: Pocket Outlook (Calendar, Contacts, Tasks, Inbox), Pocket Word, Pocket Excel, Windows Media Player (for audio/video), and Pocket Internet Explorer.
  • HP Productivity Tools: HP Home Menu, HP Task Switcher, HP Image Viewer, HP Backup, and HP Emergency Backup.
  • Third-Party & Utilities: LandWare OmniSolve Calculator, Developer One CodeWallet Pro (for passwords), AvantGo (for offline web browsing), and PeaceMaker (for infrared contact exchange).

One item I wanted to test is the infrared transfer ability between units. I’ve made a small file within the word program, set one unit to transmit on infrared and the other to receive. On sending the file, this task worked fine.

Received
Sent
File transfer worked fine

The transfer worked however both units have to be within a very close line of sight to do so, it just shows how much file transferring has moved on within the last 25 years or so. We have been spoilt.

These units are both working fine.

Result:

Full Microsoft CE package
Working as they should be

There are many uses listed for these units online including MP3 players and television controls. However, I think using as a to do list for my workspace is probably the most appropriate usage for me. I need organisation in my life, so what if I’m using technology from quarter of a century ago.

Why not?

Two perfectly good items saved from landfill.

Small victory, and that’s good enough for me.

Many thanks for passing by. It’s always very much appreciated.

PS5 DualSense controllers

When the youngsters of the clan, drop surprise repairs on you at family gatherings.

It’s great when one of the youngsters of the clan come up to you at a family gathering and greet you thus, “Oi, uncle Dave, have a look at this for us will you?” and then they just disappear into the crowd as I’m now holding a couple of items I’ve never been exposed to before, in this instance a pair of Playstation 5 Dual sense controllers. (I had to google to find out what they were!)

Here you go “Uncle Dave”

Apparently they don’t work, or are having difficulties, and it’s now down to me to find out what’s wrong.

Now I’m not a gamer in the true sense of the word. I like, and have repaired and own a good few hand held devices that have been featured within these blog pages, but I do not own a console, I never have. However I’m lucky in that I know a few people who do have these consoles, who I can go to and test how they are behaving, but the good thing is that these controllers can also be tested without a games console and just require a computer with a USB port, and I do have one of them, a clever move by the manufacturer me thinks.

First thing I did here was to plug them in to a USB supply to charge the onboard battery. Each one has a 3.7v rechargeable battery that should give between 6-12 hrs of activity depending on how vigorously the unit is being used. When charging it glows on and off orange until it is charged and then the glowing just stops. Both these units took about 2.5 hrs to fully charge, and they seem to both be holding a good charge seeing one of them, the black version has not been used for some time.

Let’s get them connected up to a PC.

A simple good quality USB cable is the communication method between the controller and the PC. Next, you go to the address: https://dualshock-tools.github.io and here is where you will be doing those checks on the controller that sits in your hand. Seeing I don’t really know what’s wrong with the controllers I have been trusted with, I think this is the best place for me to start my investigation as the site does do some good, and thorough testing.

I have two controllers to check so I start by plugging in the Black controller, clicking connect on the screen gets access into the memory of your controller and all the firmware detail and build date is displayed in front of you. Cool!

Just under where this information is displayed we enter the first series of tests, a bank of 8 basic function tests that check all bells and whistles (as such) are operating as they should. This Black controller passed all these tests with flying colours.

All 8 checks passed
Light checks all passed
All buttons and switches working

The checks are thus:

  • USB controller: here the connection is tested a simple pass or fail
  • Buttons: all buttons have to be continually pressed until they turn green on the screen, a simple pass or fail
  • Adaptive trigger: the system puts a resistance on the two triggers representing various triggers on guns and switches experienced in various games, if there is suitable resistance here the result is a pass.
  • Haptic Vibration: this tests the vibration motors in the controller, if it’s working then it’s a pass
  • Lights: all lights on the controller are cycled through displaying the whole range. Simple pass or fail
  • Speaker: a tone is played through the built in speaker, a simple pass or fail.
  • Headphone jack: a simple test of the plugin headphone jack – pass or fail
  • Microphone: a simple test by blowing in the on board microphone checks if it’s working, a simple pass or fail.

And as stated the first controller, the black one has passed all of these tests. Impressive. The next tests are all centred around the two thumb pads, their return to centre position and their all around circular motion and their calibration.

Left pad off centre
Calibrated
Before and after calibration

The left pad was showing slightly off centre and I was able to make some minor adjustments via the program interface to correct this issue. The good news was that it is not a constant stick drift, and the mechanism does not require replacement, it is easily adjusted. With settings saved, disconnect the controller, reinstall it and re check the calibration and it should all be good. And it was. With minor adjustments made to this controller I am pleased to say it is working as it should, it is now repaired and will be heading back to its owner.

Now onto the second item, the white controller. I put this controller through the exact same testing protocol as the first one, all was going well until we got to the buttons section where this one failed. The down button on the left hand side of the controller is unresponsive, you can see this in the photos below

Failed test in the button section
Failed button highlighted on Controller and screen

All other tests on this controller were fine. Again there was a little drift on the sticks that I was able to adjust and they are now both as central as they can be, operating well through their whole range. I will go through the repair and retesting of this pad in the section below the YouTube video that I have highlighted below.

A while ago, if your game pad was playing up, there wasn’t really a great deal you could do apart from replace the thumb controllers if you were experiencing issues such as a little stick drift (when a controller is moving on its own accord). A bad case of stick drift would require you to change the controller mechanism. However, some very intelligent people within the gaming community have put together a number of packages to test your game controllers, but the one mentioned in the video below has been a game changer as such, as it also allows adjustments to be made and saved and thus extending the life span of the components within, thus reducing the need to replace and dispose of those components prematurely. Have a look, it explains the testing protocols and checks them against other programs.

The whole testing procedure checked and compared with other testing programs

Repair and retest

It’s a simple enough activity to get inside of the controller, some clips, and four screws get you inside the package, getting beyond this though to the controller buttons where we need to be is a little bit more in depth. So here we go…

I’ve dismantled the controller as I said I would, initially the process requires four screws removing, after you first gently prise off the black decorative plastic surround as in the pictures below.

Black surround
Screw on each handle
Screw under each button

When you remove these screws the next task is to gently prise the two shells apart that then reveal the base of the controller

Shell successfully removed

At this point the battery needs to be removed and that is a simple plug disconnection, the battery plate has a single screw in it that needs removing. Before you remove the battery plate there are four ribbon cables that need removing, if you don’t do these then you will probably tear them and need to replace them. Believe me, I have done this in the past and ruined the tiny microphone ribbon at the very front. It’s not expensive to repair, just an unnecessary expense. Don’t rush it. Another 3 screws removed and we can now take off the top cover and get to where we need to be.

Top removed exposing fault pad area to the left

As soon as the top was removed I could see the potential issue with the controller direction pads. The pads are a rubber base with a carbon pad that makes contact with the circuit board below. Sometimes a simple clean of these pads can be sufficient to regain a connection between the two, but in this case it was plain to see that the pads on both sides were both well worn and to be honest they both required replacement.

The two contact points ringed in red that were sufficiently worn
Normally a good clean with IPA will work

As stated I did give a clean to all contact points with a solution of IPA, reassembled and tested again with no change in performance, the fault remained. I will now need to purchase a new pad assembly and replace the film circuit board below them. Fortunately these are freely available and will cost no more than £6:60GBP to replace. And considering a new controller would cost at least £60:00GBP it’s worth the small investment to restore it.

My shopping list of spares

I now just have to wait to receive these items and get them installed.

The items arrived just as in the photos above, and following the previous instructions to dismantle the unit, I have removed the old conductive film sheet and replaced this with the new one. I have also removed the silicone pads with the carbon inserts and these have also been replaced.

New conductive film
Now reinstalled

Now all I have to do once I have connected the ribbon cables is to get the outer shell back on the controller. Once this is done, I can log in and start the testing process once again, connect the controller to it and then commence a full test of its functionality.

Before repair
After repair

And as you can see in the above photographs, this has been a successful outcome. Where the left hand side lower button had failed, the new conductive film has addressed the issue and this handset now has full functionality and is working as it should be.

Next I’m just going to do a re-calibration, to check that the sticks haven’t drifted in anyway. If we are in a good position, we can then class this repair as successful and then it can then be passed back to my nephew to carry on shooting aliens, and he can then continue his mission to save the world.

Result:

Two controllers have now been serviced and are both working well and within tolerance. They are about to be returned their owner so he can get them back into use, killing aliens and saving the world from a zombie apocalypse (or whatever he does with them)

Not having a lot of experience prior to receiving these two controllers, I was a little doubtful about where to start and what to check. However after reading up on them, and their operation, I was able to pick up a lot of advice and information regarding their manufacture and serviceability. I like to think that I’m well clued up on these items now as I can disassemble one in minutes, replace parts and reassemble without having any screws or parts left over ( Always a good sign 👍)

And to round things off I have now been given one of his friends controllers to repair as well, so I must be doing something right!

Thanks for passing by, as always it’s always very much appreciated.

Packard Bell DB128 personal organiser

Another personal organiser / PDA from 1992. The Packard Bell DB128. Does it work? Is it just needing new batteries? Who knows? Let’s have a look.

What the listing stated:

The Vintage Packard Bell DB128 Deluxe PDA Personal Organiser from 1992 is a charming piece of retro computing history. Manufactured by Packard Bell in China, this personal organiser is a single unit that serves as a reminder of the technology of the early 90s. With its vintage appeal, this item is ideal for collectors of vintage computing devices or those who appreciate the nostalgia of older electronics. The Packard Bell DB128 Deluxe PDA is a unique and rare find for those curious about the evolution of personal digital assistants. Needs new batteries at the very least. For repair or spares only

EBay

Packed Bell DB128 personal organiser

I love these postings on the selling sites, no actual real description of the state and condition of the unit you are purchasing, only a potted history of the item with the standard EBay get out excuse of “For repairs or spares only” I know, I can hear you saying, “ Well don’t buy it then – fool” and I agree with you wholeheartedly, I am a fool and I’ve brought it. But, it only cost me £3:30GBP so I’m happy with that, a good price for a bit of retro tech from 1992.

There is a good chance that this unit does only need some power, wouldn’t that be good? However it wouldn’t make very good copy on a site that looks at fixing other peoples castoffs, but I can happily go with the odd quick fix once in a while.

I love these old PDA devices from the 90s, and lots of people do, I guess some of us are still stuck in a period where technology was so wonderfully new and interestingly different. Whereas today everything is pretty much the same and controlled by a few massive organisations, when back in the 90s there were lots of different companies for you to choose your wears from.

I’ve certainly worked on a few on this site, just check the links on the home page to see what I have worked with.

If you are interested in the 90s PDA technology, may I suggest you look at this guys YouTube site. His name is Hugh and his channel is called Handheld Computing and he is a very interesting chap, and the technology is superb. Give him a visit.

Ok. Let’s read a little bit more about this unit:

The Packard Bell DB128 (also known as the DB-128 or DB 1280 IR) is a vintage handheld personal organiser released in 1992. Also known as the Oregon Scientific DB-388P. It was designed as a compact digital databank to store contacts, manage schedules, and perform basic calculations. 

Technical Specifications

The device features the following hardware details:

  • Memory: 128 KB total memory, with a user-available area of 131,070 bytes.
  • Display: An 8-line by 32-character dot-matrix screen.
  • Power: Operates on two or three CR-2025 or CR2032 button cell batteries, often with an additional battery for memory backup.
  • Physical Dimensions: Approximately 15.8 x 8.2 x 2.3 cm, weighing about 252g.
  • Connectivity: Data can be synchronised with a PC via a serial cable or infrared (IR) LEDs. 

Core Functions

The DB128 includes several built-in applications for daily organisation: 

  • Phone Book: Stores multiple contact categories including names, fax, mobile, and email addresses.
  • Scheduler: Features a calendar and appointment system with start/end times and audible or silent alarms.
  • Utility Tools: Includes a 12-digit calculator, home and world clocks, currency/metric converters, and a memo/expense tracker.
  • Security: Offers a password protection feature for sensitive data. 

Google

I just have to wait for its arrival now and I’m looking forward to that, I won’t speculate anymore about what might be, I best just wait for its arrival to carry out a suitable assessment.

Assessment:

It’s arrived and good god, it looks as if it’s been stored in a vacuum cleaner bag 🤦‍♂️ it’s utterly filthy, funny how none of the original photos showed this isn’t it? I don’t believe this is the same unit as was in the original posting.

If I’d have taken this into the house with the wife present, i think she’d have murdered me, or at least severely injured me one way or another… So that is why you will see that these pictures were taken at the kitchen sink, the first thing this unit received was a clean with a cloth and warm water. After that it’s had a good polish and it is now nice and clean. Now it can come further into the house, into my domain!

Before and after over the kitchen sink

Now the unit is tidy, everything is as it should be, and the screen is in a good condition barring a few minor age related scuffs. It’s dead, and that’s to be expected, I’m just hoping there are no major surprises awaiting me when I get the back off to have a check inside.

Three screws later and the back is off. All three batteries are still in place, all very dead but fortunately there is no corrosion or battery leakage. All that is visible is some age related tarnishing of the battery enclosure, this however has no effect on the board or electronics and will tidy up with a little brush over with some relevant cleaning solution.

Case off
Battery cover removed

With these little database units you were always supposed to change the two main batteries and get them in place before even considering removal of the single back up battery. This was purely to ensure that saved data was not erased from the memory bank, however as all these batteries are dead, it’s no real issue here. The backup battery is protected with a single screw that needs to be removed to allow access. This unit was able to transmit and receive data using infrared technology. If you look at the picture above with the case off, on the left and the right of the chassis you will see a white diode component, these are the infrared transmitter and receiver parts of the data transfer circuit.

Clean battery contacts
Batteries very dead

The batteries needed within this unit are CR2025 mini cell batteries, I currently only have CR2032 batteries, they look the same but just what is the difference? Thanks for asking, i will now explain.

  • The letter “C” refers to the batteries chemical compound, “Lithium” or to be absolutely precise “Lithium Manganese Dioxide”.
  • The letter “R” refers to the battery shape, in this case its “Round”.
  • The numbers “20” refer to its diameter in millimetres in this case “20mm”.
  • The numbers “25 or 32” refer to the “Height or Thickness” of the battery in millimetres “2.5 or 3.2”

And there endeth the lesson for today. So, in all aspects the batteries are exactly the same, 3 volts, but there is just a slight variation of 7/10 of a mm in thickness. In some cases this is not an issue where there might be that slight bit of space for you to use an alternative cell, however in the case where tolerances are tight such as in watch mechanisms, that tiny difference in size may not allow you to reassemble the backplate to the watch. I hope that clears up the difference between the two coin cell letter and number allocations.

I can use CR2032 batteries in this unit as there is the space. I have some CR2025 batteries on order, so I will comply with the original standard when they arrive. But for the purpose of testing further, the CR2032 batteries will suffice.

Repair:

What repair, to be honest it’s been more of a clean, I’ve cleaned the inside circuit board with some IPA and a brush and cleaned all the crevices with a pick and finished off the outer case with a good coat of antiseptic cleaner and polish. I have inserted the three required batteries and switched the unit on.

All working, all features functional

Not a great deal more I can say. It’s clean, in fact it’s very clean, and fully functional.

Result:

It’s 34 years old, it’s been discarded, put aside for disposal, given one last chance in its chequered life and I purchased it for £3:30GBP. It’s now revitalised, cleaned inside and out and been given a new lease of life. One of those very simple clean and repairs that anyone can do. And another item is saved from landfill.

When turned off
When turned on

This will now be added to my ever growing collection of old PDA equipment from the 90s, a collection that is starting to grow at quite a considerable rate. I have a few more little projects similar to this in the pipeline, quite similar to this one but requiring quite a bit more attention. Please keep passing by to keep up to date with these “mini” projects.

Once again, thank you for passing by, it is always very much appreciated.

At last, the new work space takes shape.

The workspace is starting to take shape. Normal service to resume soon. Maybe I can catch up with this backlog now.

I’d pretty much closed down my workspace, when we sold our old house back in August last year. Everything I used the most was pretty much moved into storage as we prepared to make the move to our new home. All I was left with was a few screwdrivers, so needless to say, content on this site dwindled, whilst purchasing continued, hence I currently have 29 posts, in draft, awaiting completion as I don’t have a suitable workspace or the equipment available at the moment to complete any of them. I even purchased a 3D printer in November of last year for my birthday, it has been in storage all this time, I have now brought it home and have now made my first 3D print, that post can be found here: My First 3D print attempt

Things are about to change.

We pretty much have every room in the house now up and running. We are settled now and the final boxes have been attended to within the house, and we are finally getting to the point where regular recycling visits to the tip to get rid of the old cardboard boxes are finally coming to an end.

The next stage in my wife’s own words are, “ we can now get Dave’s room sorted.” The words I’d been waiting for.

My workspace – a wall in a guest bedroom

I’m calling it my room but in theory it’s not a whole room. It’s part of the third bedroom where I am probably just occupying one wall at the end of a guest bedroom, it’s all I need, I have a Garage to do all the blokey stuff in, this space is purely to work upon all my cameras and other more delicate items of work.

Whilst visiting a certain Scandinavian furniture store i have purchased a basic setup for me to begin working on. The good thing about these furniture systems is that you can start with a basic layout and just expand upon it, and that’s the plan.

I have a desk and drawer system arriving today, and quite a bit of construction to do, once this is in place then I can start getting my gear from storage and get it back into place. It will be nice to have all my equipment in a permanent placement, without having to take it all apart and storing everything back in boxes after I have used it. I’m looking forward to this as to be honest, I’ve really missed it. However I have been pre occupied around the house and there has been an awful lot to keep me busy, there’s been no rest really, I must be very wicked 😂

The workspace starting to come together

So as of 10th March, I’m quite pleased to say that my workspace is now ready to use. It’s still a way from being complete as I still have stock to bring from storage along with the last few tools and boxes of components. There are still shelves and storage to put in place, but at long last I can now sit down and finally start to play catch up with my ever expanding backlog.

The workspace….liable to be moved about yet again

I must admit I’ve moved things about, and I’m probably liable to move things about again over the coming days and weeks, even months as I can’t quite decide how the setup should look. It’s probably going to be a few sessions of me not being able to find tools, parts and cameras that will help me decide just what, should be where. In the meantime, it’s good that a kind of normality has been restored, and I can now start to resume where I left off all those months ago.