Category: Computing

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.

My First 3D print attempt

I’ve had a 3D printer for 4 months now. I am now able to use it and today I have produced my first 3D printed item. A Poop bin. Yes you did read that correctly….

Those of you who watch this site with eager anticipation (I’m joking 🙃) may remember a post that I published in November of 2025, when as a result of all the money I received as gifts for my birthday, I went out and purchased myself a Bambu PS1 Combo 3d printer: I’ve taken a dive….

My Bambu PS1 Combo

I’ve not printed a single thing 3D in my life and to be quite honest I haven’t got a clue on what to do, but as usual I’m willing to learn. I’ve had a number of occasions over the past couple of years where I’ve needed an obsolete part for a project, I’ve had to go as far as Italy to get parts printed whereas with this equipment I could have done so my self, cogs and gearing are a regular item that I come across that I could also use this equipment to produce. See, it will serve a use to me once I have my workspace configured.

That time has arrived….

Now we are safely moved in to our new home, and all the important stuff has been attended to, attention has switched to getting my work area up and running, and I will shortly be uploading a post regarding the inside my work area.

However, this piece of equipment has been in storage since November, almost 4 months now and needed to be put into action as soon as possible. Seeing that the workbench was now in place it only seemed right that the printer was now unpacked.

It’s a big box, and has a lot of packaging

Even to do the unboxing there is a QR code to link you through to the process to follow, it is very informative as these printers are packaged so well, there are screws and supports to remove, put in place to stop sensitive parts being damaged or dislodged during transport.

The AMS system installed on the top of the printer

When you follow this system of unpacking, you are also linked to an app called, “Bambu Handy” that really is the control system for your printer. Here you register, set up blue tooth and WiFi options and the app then becomes your monitoring and control for your printer. At the moment I’m sticking with just this app, once you are more experienced there are a number of more complex programs you can then use for design and editing purposes. For now I have found my level. I now install what is called the AMS system on top of the printer, it is an automated feed for using more than one coloured filament, the printer can move from one colour to the next automated, without interrupting the print process.

But that creates a little waste product….

And there is my first print project.

When the printer initially primes, or when it changes colour it will create a little waste as it clears the nozzle of one filament to use another. This waste then exits the rear of the printer onto the floor, or work bench depending on the positioning of your printer. For this reason people then install what is known as a “Poop bin” to collect such waste. Here is a draft picture of the one I will print for this printer.

A draft “Poop bin”

Now, this app fortunately comes with absolutely thousands of pre programmed prints covering all aspects of printing technology from home, toys, educational and everything in between. Fortunately, because “me” as the totally clueless, doesn’t have to learn basic CAD and slicing techniques, because some clever individual has already done that for me. And for that I am very grateful.

There are a number of tools and equipment you can print for these printer units, it’s as if they are self maintaining and developing. All very clever stuff.

But a “Poop bin” is a necessity if you don’t want to suffer the wrath of your other half by spewing out randomly produced plastic waste on to her nice new carpets. That is not conducive to a happy and peaceful existence 😂

So a “Poop bin” is my first ever 3D project….so here goes.

A simple selection on the app, of the item you require, a few settings get amended, the printer does some calibration checks and then the process starts, this particular print takes about 4.5 hrs to complete. Fortunately the system has an inbuilt camera so you can check progress or even get a timelapse at the end. You can basically shut the door, turn off the light and walk away, you can always check in, but sitting there just watching for 4.5 hours can get a tad boring, and is just like watching paint dry, so why not just walk away and do something more useful. I did just that, and went to assist the wife with some chores.

Here is the said timelapse of the print. 4.5 hrs in about 30 seconds. The dark periods are brief and were just me messing with the onboard light settings.

My 3D poop bin printing

Here’s the actual finished article, and situated at the printer.

Printed item, and in place

So that’s it really. Still learning but quite happy with what’s been learned so far, the desk and everything needs some fine tuning and there is a lot of gear still to be added but we are now off to a flying start.

Current position with anti vibration feet now installed

One thing I did notice was that there was some vibration and noise, however I did get gifted some anti vibration feet with the package when I purchased the printer, I have now installed these so hopefully the next print will be a little bit more peaceful, not that it was particularly bad anyway.

And that concludes this post. Thanks for reading, it’s always appreciated and I hope this day finds you well and at peace.

Sharp OZ-7000 Wizard

The Sharp OZ-7000, Amongst one of the first electronic organisers and precursor the PDA. Needs repair. Or does it?

What the listing stated:

Not working. I have replaced the two batteries and cannot get it to work. I have not touched the memory battery. See picture for actual item. Case is a bit sticky unfortunately with age.

EBay

First of all, what is it?

The Sharp OZ-7000 Electronic organiser / Calculator

The Sharp Wizard series, introduced by the Sharp Corporation in 1989, was among the first electronic organizers and a precursor to personal digital assistants (PDAs). The debut model, the OZ-7000 (known as the IQ-7000 in Europe), combined organizer functions with an IC Card expansion system, allowing users to install software and memory cards. Over time, Sharp refined the series with larger displays, increased memory, and enhanced features, such as infrared communications port for wireless data transfer, touch-sensitive displays, and clamshell designs.

The out-of-the-box functionality of the OZ-7000/IQ-7000 included a memo pad, a telephone pad, calendar and scheduling with alarms and repeating events, multi-time zone clocks, and a calculator, thus covering all the basic functions found in PDAs since. The keyboard was not QWERTY, although later models, starting with OZ/IQ-8000, changed the orientation of the screen and keyboard layout.

The OZ-7000 was about 6.3 inches (163 mm) tall, 3.7 inches (94 mm) wide closed, 7.25 inches (184 mm) open, and 0.85 inches (21.5 mm) thick closed, making it much larger than later PDAs. It featured a serial port (proprietary connector) to attach to a Windows PC or Macintosh or another OZ-7xxx/OZ-8xxx device, an optional thermal printer port and a cassette tape backup. The OZ-7000/IQ-7000 model featured 32 kilobytes of internal memory and a 96 x 64 dot (8 lines x 16 characters or 4 lines x 12 characters) black and white LCD with controllable contrast but without a back light. A major advertised feature of the model was the IC Cards expansion slot for accessory cards developed by Sharp.

Wikipedia

A bit of a break from the mountain of photographic equipment I have been dealing with lately, I thought I’d take a bit of a detour and have a look at some prehistoric PDA gear, as I have also done in the past, as you will no doubt be aware of, if you have ever read any of my posts on Psion organisers.

From what I can gather, this one is a little beaten up and battle scarred, and quite simply does not work. I’ve paid the princely sum of £8:54GBP after i managed to knock the seller down by a few pounds. I just now have to await its arrival before we can carry out a thorough assessment.

Assessment:

Its here, everything is as it should be apart from the base being a bit loose in one corner where the clip inside has broken, however that’s not an issue and can probably be repaired.

The broken clip

The exterior is a little sticky but again, this is just one of those 1989 rubber enhanced products where the vulcanised rubber coating has started to degrade. A post I previously published shows how I deal with these 80’s degrading rubber issues: Sticky, Rubber camera grips

Front case
Rear case
Both sides of the case are sticky and require cleaning

The unit has three batteries, under the rear shell. These are two CR2032 and one C1616 coin cell, with the C1616 being the units memory battery. These batteries will need to be tested as this unit does not start up, the whole unit is dead. The previous owner has stated that they have changed the two main batteries but not the memory battery, testing them will tell.

The three batteries

Beyond that, all catches, buttons and switches seem to be performing as expected, no cracks or major damage to the external shell, or screen area. Naturally there are signs of usage as you would expect on an item that is now 36 years old, light signs of age related wear and tear, nothing of concern that is detrimental to its operation.

Repair:

I’m leaving the broken clip on the rear shell as it is, it’s not visibly exposing anything of the interior and to be honest needs quite a bit of force to show the gap, it’s not a problem and not necessarily requiring a repair. In normal handling it is not even noticeable, so it will remain as it is.

The main fault, and I apologise in advance, as it was not really a fault, was a misunderstanding of the unit’s operation by the previous owner. When you take the back off and change the batteries, you have to operate a switch so as to not interrupt the backup of the system.

Battery backup switch there is a “B” and a “A” setting

There are two modes and these are explained below. This switch is located inside the battery compartment and is used when replacing the main batteries to prevent data loss.

  • B stands for Backup, a setting used during the battery replacement process. The device relies on a small, separate backup battery (often a C1616 coin cell) to maintain memory while the main batteries are removed, provided the switch is in this position.
  • A stands for Active (or simply the normal operational position), which is the standard setting for everyday use once new batteries have been installed. 

To replace the main batteries safely and avoid losing your data, you must follow a specific procedure that involves setting this switch to “B”, changing the main batteries, and then switching it back to “A” after the new batteries are inserted. 

The issue here was that the batteries had been changed and the switch was put into the correct “Backup” mode. However the previous owner had not placed the switch back into the ”Active” mode when the batteries were changed and the back of the shell was put back in place. Hence the unit would not work as in theory the batteries were locked out of use. On opening the shell up, this was the first thing I looked at, and when the switch was put into the correct position the unit sprung into life once the “On” button was pushed.

When the switch was set, power applied and the unit reset to 1989

When the unit was turned on it then reset to 1989, I was able to change the times and date, and I was pleasantly surprised to find out that the date range on this unit covered the years 1901-2099. Considering this unit was released 11 years prior to the Y2K bug of 2000, it showed some advanced thinking in the implementation of these units.

Happily updated to the current date and year

One of the issues with this particular unit is that there is no backlight on the display, the display is black and white and the only change that can be made is to the contrast. Back lights eventually arrived with later models. So use of these units was pretty much limited to daylight hours, or whilst under a light source of some kind, that said the display is very good and has a good contrast range.

The unit with an example function card installed
In use in the carpark at work

The last thing I have done is clean with some IPA to remove the years of gunk and I think this was quite successful

The IPA certainly lifted some dirt

After this I have finished off with a nice polish with some car cockpit cleaner. It’s finished this repair off just nicely.

Result:

Here we have a nicely presented, clean and fully working example of a nice little bit of personal computing history.

Has come up lovely
Front fascia
Rear fascia
Looking gorgeous

So. With these older items, it’s sometimes good to just have an awareness of how these old timers operate. Get an instruction manual, study how it works, it can make the difference between selling it as damaged, when in fact there really was nothing really wrong with it. The seller could have sold this for 3 or 4 times the value that I purchased it for, but I’m not worried about that, as far as I’m concerned I got myself a bargain and to be honest, that doesn’t happen that often.

It’s a win win situation as far as I’m concerned, I win as I now have a lovely example of pre PDA technology, and it’s a small win for the environment as another piece of “Waste” has been saved from landfill.

Thanks for passing. Thanks for being there. Always appreciated 🙏

Sinclair Cambridge Memory Calculator

What the listing stated:

This auction is for a used cased Sinclair Cambridge Memory pocket calculator and original case. The item is in very good cosmetic condition as is the case which still has its instruction sheet. The item is powered with 4 x AAA batteries (not supplied) and does work although 1 of the digits is faulty and does not display (see pictures) plus the number 5 digit is not working. Please refer to the pictures and description provided before bidding.

EBay

It’s faulty…obviously

So it does work, but it doesn’t? This calculator is a model one memory calculator, that dates from around July 1973, ( Actually May 1975 see photos below) and is one of the earliest available mass produced electronic calculators available in the UK at the time. And it was produced in collaboration with a guy called (Sir) Clive Sinclair, who in the following decade would become synonymous with tech development in the UK. It retailed at £29:95GBP, and given the rate of inflation, its cost today in 2025 would be a staggering £463GBP. Wow!

Courtesy of Vintagecalculators.com

I love collecting old calculators, I couldn’t afford one back in the day when they arrived on the scene as I was only a child and probably only on about 20 pence a week pocket money, and savings and investments were not even known to me at this period of my life. The thought of saving that precious 20p a week for the next 150 weeks wouldn’t have even remotely crossed my mind. What no sweeties?

But I can buy them now, so no big issue!

So this one has become available, and I’ve been tracking it for a week or so, there were nine other people watching but I secured it for a total including postage of £14:49GBP, and I’m happy with that, it’s a piece of retro history for a very good price. Even if it remains faulty, or should I say working but not working?

This unit obviously has its problems, the button number 5 doesn’t work and one of the led digits is also not functioning. Hopefully I can get these issues sorted and soon have the calculator back up and working as it should. That would be nice. I’m looking forward to this little project.

Assessment:

It’s arrived and it’s a lot smaller than I anticipated. It has a separate hard protective case, which is a nice touch and a small info sheet on its operation. Cosmetically it’s in a good condition with just minor signs that are age related. There are no gouges or scars so it has been treated well, though it’s not pristine.

Two buttons unresponsive and one LED

Batteries go in ok but, I believe old style AAA batteries were a little wider than those used today and would sit a bit more snuggly in the battery compartment. As you can see there is a little wriggle room here, and springs at both ends need adjusting to help prevent this. I may have to use some spacers so the batteries sit tighter in place.

Gaps between batteries – means movement

The switch is a bit temperamental and can be seen quite plainly from the battery compartment. It looks strangely out of place with no batteries in place.

Switch off
Switch on

It is such a basic design solely relying on tension of a small metal plate to short across the connection points. Should be a simple enough issue to sort.

There is a little battery contamination on one of the battery contacts, again this shouldn’t be too much of an issue and should clean up ok with some IPA.

Some battery contamination

It was originally reported that there was one unresponsive button this being the number “5”, there is also another unresponsive button, the multiplication “X” button. There is also one LED indicator, the 4th one in from the left hand side that is not operating. Add to this the issue with the On/Off switch and the contamination, and the original faults reported in the original sales pitch have now doubled. I just wish people would spend more time going over the issues and then give actual accurate feedback as to what the real faults are, it would make for a far more pleasant buying experience. Rant over.

There doesn’t seem to be a single screw holding the body together, I just hope it isn’t all heat welded.

Let’s try to get inside.

Repair:

Well it cracked open quite nicely with no issues with just a plastic flat prise tool. The main board just sat comfortably in the unit, secure, and not a screw in sight. Strange as time moves on some of the games units I come across have best part of fifty of the little blighters to remove before you get anywhere. sometimes the old way is good.

Bare board
Opposite side of board
Date is May 1975

The dismantling of the keyboard is a little complex and you have to take time and make sure you know how it’s going to go back together, it’s just a bit fiddly. The board is quite straightforward and as soon as I see some of the IC’s it dates the unit perfectly. The chips are dated May 1975, and that is about 18 months younger than what I originally thought, it’s quite informative to get inside and learn occasionally and this is just as good as having a birth certificate presented to you. All good stuff.

I’ve proved that there isn’t a problem with the missing digit on the display as using my multimeter in diode mode I am able to prove that this LED is working fine.

LED working

The picture shows just one part of the display range on this particular digit, I can assure you all other sections of the display are also working.

Regarding the case with the buttons not working. I have checked this out for continuity and both digits go through the same portion of the main IC and there doesn’t appear to be any broken traces. It’s a strange one but I have also found some really poor solder joints that are either cold joints or just poorly soldered from the start, there are a couple of resistors that need re soldering. It may be nothing at all, but it needs attention, a full reflow wouldn’t go amiss or take too much time.

Faulty resistor joint

I’ve reflowed the entire board due to there being a few cold solder joints.

Full reflow completed

On top of this I have taken off two old capacitors and tested them out of circuit, and both were out of their operable range of +/- 10%. As a result of this I have replaced the offending components with comparable new ones.

Old capacitors
New capacitors

Even with all these extra tasks being undertaken there is absolutely no change in the way it operates. Nothing has gotten worse, the faults that were originally there still remain. I have done some research on line and carried out some further tests and checked expected voltages, most are within range except one that appears to be less than its expected value. After testing everything on this board, every component I can only surmise that one of the three chips has failed, I suspect very much that this, the main chip, a CZL550 integrated circuit. Otherwise known as “Calculator on a chip” is the one that is at fault.

A CZL550 chip

To be quite honest these chips are fairly rare and command a price far in excess of what I paid for the original unit, and I don’t really want to do that. I think I’ll wait around to see if I can secure another faulty unit to complete this repair, so in the meantime, and until I can secure such a unit I will put this repair on hold.

Result:

Well, it’s not what I wanted but sometimes you just can’t win with some of these old projects. In no way am I walking away from it, it’s just that the parts are so difficult to get hold of that you really do have to just wait until a sufficiently faulty one comes up for sale. And that could be days, it could be weeks or months. So for now i admit defeat, but it will not be going to trash. It will remain in my ever expanding “To do” box, for me to pick up on at a later date. And when I am in a position to move this project on, I’ll pick it up in a continuation of this post.

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

MB – Simon

Remember this? Everyone had one around 1978 apart from me that is. Well, now I’ve got one, only 47 yrs late and it doesn’t work. But hey that’s what this site is all about, and that’s how I roll. Always late to the party, and even then you’ll probably find me in the kitchen 🥳

What the listing said:

Cosmetically in very good condition but does not work. Please see attached pictures to judge condition for yourself.

EBay

Another one with all battery covers! I’m shocked. And what’s that screwdriver there for?

The guy was after £17:00GBP and that included postage, but I put in a cheeky bid and managed to get it with postage for £9:80GBP. Anything under a tenner is good in my eyes.

Here’s some history:

Simon is an electronic game of short-term memory skill invented by Ralph H. Baer and Howard J. Morrison, working for toy design firm Marvin Glass and Associates, with software programming by Lenny Cope. The device creates a series of tones and lights and requires a user to repeat the sequence. If the user succeeds, the series becomes progressively longer and more complex. Once the user fails or the time limit runs out, the game is over. The original version was manufactured and distributed by Milton Bradley and later by Hasbro after it took over Milton Bradley. Much of the assembly language code was written by Charles Kapps, who taught computer science at Temple University and also wrote one of the first books on the theory of computer programming. Simon was launched in 1978 at Studio 54 in New York City and was an immediate success, becoming a pop culture symbol of the 1970s and 1980s.

Wikipedia

From what i can see in the pictures the item seems good, cosmetically. I may be able to see just a little contamination around the battery contacts but I can’t be sure. It worries me when i see a picture that shows a screwdriver alongside the item you are buying, it just screams at me that the seller has been in side and is not being truly honest about its issues. Let’s just wait until it arrives to do a full assessment. I’m genuinely excited about getting this working, as my age veers ever closer to the higher numbers. I need something to stimulate my mind, what’s left of it. 😂

Assessment:

The unit has arrived and on first impressions looks clean and tidy cosmetically. The pads are not very responsive and the battery contacts are seriously corroded. The unit is a power hungry beast, taking two ”D” cell 1.5v batteries and one PP9 9v battery. The unit does not work with its batteries in place, and i’m not surprised really, and to round it all off two screws are missing from the case, and one screw mount is broken. All four plastic springs that sit under the coloured pads are broken, and just to clarify someone has already been in here and it doesn’t bode well. My previous concerns of a screwdriver being in the original photos have been confirmed. It’s been tampered with.

Broken screw mounts and contamination
Bad contacts – contaminated
Pads unresponsive due to broken plastic spring mounts

The board is a typical of many circuit boards from this era that were produced for MB. I had a similar circuit board on this item here: MB – Computer Battleship

Top of board
Underneath the board
You can see the board structure that is typical for this era. The contact points are indicated by the red arrow marks.

In the picture above you will see two arrowed points. These points are the power contacts that make contact with the two seriously corroded battery contacts you can also see above. No wonder there is no power getting to the board. I suspect this might be the cause of our electrical problem.

Repair:

First thing to do is to get those battery contacts cleaned, as well as having a good clean of the main board. This has now been done. I’ve repaired the broken screw post by simply using a rubber washer that has been sufficient for this repair.

Contacts before and after

A friend of mine has kindly offered to print me off four of the “Double Y” springs to replace the ones that are already in place and broken. He owes me a favour or three and needs some subject matter to run through his new 3D printer so I’m very pleased to help him, as pending the outcome I may well buy one myself, as I have been threatening to do so for a while now. This should sort out the issue of the unresponsive pads, first found in the assessment of the item. He’s panicking that they might not be smooth and beautiful, I’ve told him not to worry as they are hidden inside anyway.

What I currently have on the left, what I’m expecting on the right

He’s just supplied me with five double “Y” pieces just in case one is damaged in some way. Let’s get these put in place to see the difference these make.

Out with the old
In with the new

With the new springs in place the pads are working as they were originally designed to, now with some springiness in their operation. The battery contacts have now also been put back in place.

Cleaned contacts back in place

When assembled, the buttons are a little erratic and not always responsive so I decide to look into this further. A quick Look at the board shows that the solder contacts on the board for all of the button connections are worn, the solder has failed so I decide to reflow all these solder joints to improve the contacts. This appears to have worked as the unit when reassembled, now has uninterrupted operation. This is an age related issue. A simple fix.

Old solder joints that have failed and needed re-flowing

Result:

Another 47 year old saved from the scrap heap, it’s been an interesting and sometimes confusing repair and I thank my friend who stepped in to save the day by utilising his 3D printer to make some parts. Without his assistance this repair would not have been achievable.

Looking smart after a quick clean

It’s just another old piece of retro history to add to my ever growing collection and much to my wife’s dismay. Bless her.

Now working

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

Forced E-Waste PCs and the Case of Windows 11’s Trusted Platform

I thought this was a very good post from the guys at Hackaday. Most of us who use the Windows platform will have probably come across this issue in the last year or so. Being told your perfectly good computer is not up to running Windows 11 when in fact it is probably more than capable.

Is it no wonder people are moving over to “The dark side” (Linux) in droves….

Until the release of Windows 11, the upgrade proposition for Windows operating systems was rather straightforward: you considered whether the current…

Forced E-Waste PCs and the Case of Windows 11’s Trusted Platform

Peter Pan Playthings Master Challenge

What the listing stated:

Embark on a journey down memory lane with the vintage Master Challenge Computer Electronic Quiz Game by Peter Pan. This handheld electronic game offers a test of knowledge and skill, making it a splendid addition to any game’s collection. Ideal for enthusiasts of retro gaming, it provides hours of entertainment as you tackle a variety of questions and challenges.

As a sought-after piece amongst collectors, this game is a testament to the era of classic toys and games. Whether you’re looking to complete your set of electronic games or seeking a unique gift for a vintage game aficionado, the Master Challenge game promises to be a talking point at any gathering. 

This item is sold as spares and repairs as not working. Please send offers or ask any questions. 

EBay

The seller here has obviously used the wonderful AI assistant to write this post as it is so false. The unit is incomplete, it is probably not sought after, as it was not that well received back in the day, and in its current state is probably only fit to be disposed of, also an important part of it is missing. However I’m not for disposing of items such as this and will endeavour to get it back into a working state, it’s just going to take a little time and patience.

I’m missing a fair bit, and it doesn’t work
What my unit looks like
What the unit should look like

Some history:

Peter Pan Playthings Ltd was a British toy company founded in 1963. It bought Salter Science and other assets from the receivers of Thomas Salter Ltd. In 1972 the company reported a £80,000 profit. The following year it was acquired by Berwick Timpo.

The company was sold on to Bluebird Toys in 1987, which continued to use the Peter Pan Playthings brand for several years.

Produced around 1980, the Master Challenge system was licensed from Coleco (Coleco’s Quiz Wiz system), this was released in the U.K. by Peter Pan Playthings. There were 30 different cartridges for Coleco’s version. The unit comes with a question book and the system is used to answer those questions. It is currently unknown how many cartridges were made for the UK version.

T’internet

So for some unknown reason I have purchased this 45yr old piece of retro nonsense because I just can’t keep my bidding finger still. That’ll teach me a lesson. I’ve paid the grand total including postage of £5:69GBP, and I think it is missing the most important part, the book of questions that go with the cartridge, usually attached to the binder that encompasses the unit. It’s also broken, so it needs fixing anyway, and I believe extra cartridges can be purchased, so if I can get it working, and I can obtain further cartridges then no problem. If I can’t, then there is a problem. The battery cover is also missing. I’m a fool, honestly I am.

Whereas the Coleco Wiz system had 30 different cartridges available I believe the Uk version only had the 6 as listed below:

  • 1 – General knowledge
  • 2 – World of sport
  • 3 – Music
  • 4 – The bible
  • 5 – BBC quizzes
  • 6 – BBCs Top of the form

And back in the 1980 these additional cartridges and quiz books could be purchased for £6:99 GBP and 50 pence postage! Quite pricey for the time.

On this particular cartridge or what remains of it are the pre programmed answers to 1001 questions that I’m not in possession of. How novel. I have managed to find a photo on line that has some questions showing on it, these would have been in the original book that would normally be attached to the binder of this unit, so this should be sufficient to at least test the game in its current form.

Some questions to test the unit.

The game works in such a way that you choose a question from the book, you then use the unit to give your answers. If the answer is wrong you hear a corresponding low pitched sound and get a red light. If you are right you hear a high pitch sound and see a green light.

Score sheets in the back of the booklet

So basic in its operation, many thought it was totally pointless back in the day. However this was computerised technology in its earliest and most basic form and was at the dawn of a new era of personal entertainment. It deserves to be preserved.

To cover my apparent foolishness I have found another cartridge that I’m going to purchase to make this unit complete.

These plug in units come in a binder format with the brains of the game situated in an enclosed plastic block on the base of the binder, i suspect it is something along the lines of an integrated circuit. I can’t open this one as it is sealed, however when the old one arrives i will open it up as that one doesn’t have a quiz book with it. It will be good to see just what is inside. This little unit contains all the answers to the 1001 questions that are provided in the attached quiz book that slots into the top of the binder. The number inside the block indicates the quiz book reference.

Challenge quiz book and questions
The “Brains” and the quiz book reference number

The faulty computer unit I am awaiting, then slots into the binder and block by the pins you see in the photo above. The computer then simply has to decide whether your answer choices are right or wrong. And that’s the crux of the game in a nutshell.

Whilst awaiting this broken units arrival, I’ve purchased the additional set of plug in questions seen in the pictures above. This is an additional 1001 questions set, based on all the old BBC quizzes. It’s complete with answer book and the complete surrounding binder. It has arrived ahead of the faulty unit and is in an exceptionally good condition considering its age. None of the mustiness you’d expect from an item that is 45 years old. It must have been stored with great consideration. It’s cost me more than the broken unit, this cost a total of £8:15GBP, so that makes a running total of £13:84. I do have another game cartridge on order that I picked up for another £7:83GBP but I’m quite happy with this. It will be a nice addition to the games box that comes out when the family or guests come around, and everyone loves an old retro style game. It will certainly be a talking point, that’s for sure.

My additional plug in cartridge

Assessment:

I’ve not even received the unit yet and I’m getting a bit ahead of myself wondering just what could be wrong with it. Its operation is so basic, think it could only be one of five things possibly be at fault.

  • Pins that read the cartridge are dirty/damaged
  • Contamination in the battery area
  • Loose wires
  • Faulty switch
  • Cold solder joints

I guess we will just have to await its arrival when we can make an accurate assessment.

The unit has arrived and it’s a tatty looking piece. Dirty, and only the remains of the binder that used to accompany it.

What has arrived

I’ve put in some batteries and there is very dead. There is the occasional buzz when the switch is slowly moved but nothing else. It could be a faulty switch, it could be the contacts. I’m going to have to open it up and get down to board level.

Inside – all posts welded

The problem here is that inside there are no screws attached to the inside support posts. The whole unit has been welded, all plastic posts have had heat applied to moulding the post tops. I’m going to have to break these off and try to re-weld them when we’ve got it all working again….if we can.

In the meantime I’m going to open up the the plug in module that’s attached to what is left of the old binder, i might as well sacrifice that piece as it’s of no use to me and it’s in the name of research.

How the unopened board looks
Board removed front view
Board removed rear view

Now I thought they’d be some kind of integrated circuit in here but there is not. It appears to be just a board with two sets of comb like traces that would appear to just short together in the unit. Makes you wonder if the questions in the book follow some simple kind of algorithm that the unit just adheres to. Maybe every so many questions, they all have the same answer, there must be some simple and basic way that the unit knows the preprogrammed answers. Maybe I’ll find out more when I look inside the actual “Computer” unit.

Repair:

Inside the unit there is not a great deal of components apart from a single IC a capacitor and a number of diodes and resistors.

I’ve used a very fine emery board I borrowed off of my wife (don’t tell her) to try to get in and clean these contacts, as I believe this is what is causing the issue.

All buttons under a sheet of tape

All buttons are under a sheet of tape. I have removed this tape, cleaned all the contacts with IPA and repositioned them and re taped them using Kapton tape. They are a lot cleaner and are clicking nicely.

Button removal
All buttons removed
All cleaned and sealed down with Kapton tape

The contacts where the game cartridge is inserted are quite contaminated so these also have to be cleaned.

Contacts are contaminated

I’ve used an emery board to clean the contacts up on the unit, and when the cartridge is inserted we have a result. The first ten questions I have input have had correct answers only and no duplicates, so it really does really look as if the contacts were contaminated causing some kind of issue with the two parts of the game communicating.

Result:

It’s had a good clean both inside and out and a few of the old items inside replaced and given a new lease of life. The unit is now fully working and can be seen doing so in the little video below.

A little test example

I’ve since purchased a new binder for question set 1, so I now have that along with question set number 5. I’ll keep an eye on the auction sites to see if any of the other sets become available, and who knows I may try to get a full set. Now that would be quite rare I’d imagine.

A nice clean and working unit

I love digging around in these 80s units and just wonder at how basic the technology was back then, it’s just amazingly simple and so well put together. Anyway, this one is now working and good to go for a few more years yet. Saved from landfill we have another successful repair under the belt.

Thanks as usual for popping by. It’s most appreciated.

Systema/Krypton – Horizon computerised travel chess set

What the listing stated:

The item has previously been owned before and unfortunately the batteries were left inside to corrode. When tested the computer part does not work.The pieces are a complete set for playing without the computer. Please see photos.

EBay

Systema Horizon
Computerised
Battery corrosion

The unit looks clean cosmetically, and all the pieces are present. The computer side is not working probably as a result of the corrosion that is present in the battery compartment.

So I’ve paid a grand total of £11:49GBP for this unit which is probably slightly above its value. However it was from the St.Helena Hospice in Colchester, so I do not have an issue with this. In fact if I can get it working it will be donated straight back to a hospice I support here in Leicester – LOROS hospice. So all around, everyone benefits. I don’t play chess so it will not be used by me, I believe this unit was originally released circa 1996, so it is roughly 29 years old.

A really simple video, regarding how this unit works

Not much in the form of instructions online, however I have managed to get hold of some pictures of a quick start guide that should suffice for the moment. I’ll try and get full instructions from somewhere. In the meantime, the video above shows how easy it is to setup and use.

Let’s wait for its arrival to make an assessment.

Assessment:

The item has arrived and cosmetically it’s not too bad. There is some writing ink on the lid, and some staining on the base. but nothing that a good clean wouldn’t see to.

Outside good
Inside bad

Open the battery compartment and all contacts are in serious need of a good clean or replacement. Battery corrosion is bad. All playing pieces are included and that’s always a bonus. I do believe that the issue here is purely to do with the acid corrosion, as when tested with a multimeter there is no continuity through the contacts. If the corrosion hasn’t gone too deep this should not be too much of a problematic repair.

Repair:

Now inside of the unit we can see the extent of the corrosion and thankfully it hasn’t reached the circuit board as the battery compartment sits just to the side of it.

Circuit board has no visible issues
You can see the contamination on the rear of the battery compartment

I’ve disconnected the wires from the battery compartment so i can it take it away and concentrate on removing the contacts and cleaning them, or completely replacing them.

Removal of the contaminated battery contacts

The contacts are in such a poor state and so far beyond recovery that I have decided to replace them all. I need two single and three double AAA size contacts. Luckily I do have plenty of these in my current stock.

Prior to fitting the new contacts I will give the entire battery compartment a good clean with some IPA to remove the residual contamination. I will then dry the unit and just use some furniture polish to buff it all up and make sure it’s as clean as the day it left the factory. Once this is done the new battery contacts can be put in place. I can then re-solder the two internal battery wires back into place.

New contacts installed
Batteries fit ok
Contacts checked to see power is a available

New AAA battery contacts in place I just put in the batteries, to confirm continuity with the multimeter. A good 6.4v indicates this part of the repair is good and that the contacts are all working.

Next I’ve decided to replace the two wires from the battery compartment to the circuit board, as the wires, especially the negative one appears very brittle, probably a combination of age and the battery acid contamination.

Two new power wires

I’ve tidied the wire run up by using some Kapton tape to secure it to the shell so there is no chance of a wire pinch.

Before closing the shell up, I use some hot glue to put the speaker back into place.

A bit of hot glue to secure

Now we can get the last four screws in place to secure everything together.

Then switch on…does it work? You betcha, it does everything that it’s meant to, and even though I don’t really know how to play, I do manage to challenge the computer for a good ten minutes. It’s been a great test run and even though I’m not that clued up it is working how it should and is now back in a perfect working order. I’ve created this little video below.

It’s working

Now just a little spit and polish and we can bring this repair to a close.

Result:

It’s polished up well apart from a bit of age staining on the rear, this makes no difference as it’s only the hidden part of the case and every game related part of the unit looks fantastic and it works just fine.

Good working unit, looking superb

Really pleased with this especially as it’s going straight to our local hospice for them to sell on. It was brought from a hospice, and is going back to another, what better way to generate funds for them. I can’t play chess so this unit is wasted on me. Might as well pass it on to someone who’d appreciate it whilst giving some much needed financial support to a most worthy cause.

Another one saved from landfill. Win win all around.

Thanks for passing by and reading this post. It’s always very much appreciated.

Evistr L53 8GB voice recorder

What the listing stated:

Evistr L53 voice recorder – not working, parts only

EBay

It’s not working

I just wish the listings would be more specific, it’s not working because, (Fill blank spaces) you get my drift eh?

The unit looks good physically and cosmetically, and seems to have been well looked after, we just don’t know exactly what’s wrong with it. I’ll do some digging around and see if there are any generic problems, and I’ll also dig out some instructions just in case. It’s another one of those purchases where the cost of the item £2:24GBP has been out weighed by the postage, £2:45GBP however a total outlay of £4:69GBP isn’t all that bad in reality.

Why would you pay more for a used one?

Current prices are in the £30-40GBP bracket. why you’d pay more for a used item confuses me, but then I’m usually easily confused.

I’ve downloaded some instructions, so we can hit the road running with some basic idea of how it works.

Let’s wait for it to arrive and then we can do an assessment.

Assessment:

Well, the box you see in the picture above, was just wrapped in some white A4 paper and put in the post. By the time it’s reached me the wrapping was split and the box hanging out. We are off to a flying start. It’s not the original box as that is for a 16GB version and this is an 8GB version, again no problem but probably used by the seller to beef up the offer.

The unit itself is quite smart looking, clean and generally free from any heavy marks with only light scuffs that you would expect after a few years of use.

It came with an audio connector, and some other bits that allow you to connect it to a phone system to record conversations.

The package as it arrived
On charge

The unit is dead and didn’t come with a micro usb charging cable, however again not a problem as I have plenty of these laying around. I’ve checked the charging port and I’m pleased to say it is in a good state and has no damage. So the first thing to do is to get some charge into the unit as the battery has probably been sitting dormant for quite a while. It was totally dead on arrival.

After a while I have turned it on to see if the charge is being taken and was greeted by this message, not one that I was expecting or one that I really wanted to see to be honest.

Disk Error

Disk Error. My immediate thought is that this is no longer recoverable, however, looking at known faults on their own site I might be able to recover the disk by using a Windows computer to access the disk. I’ll look at that option in the repair section of this post.

Security seal intact

One thing I’m happy with is that the security tag on the back that covers the screw that allows access within, is still intact. I’m confident no one has yet accessed this unit internally. One less thing to worry about.

So realistically it’s a nice neat package in a very good cosmetic condition. It’s only problem that I can see at this very moment is the “Disk Error” issue.

Repair:

So let’s get this unit plugged in and see what we can do. It is really the only issue we have with this unit.

On my computer we have issues though. It’s a windows 11 machine and when plugged in, all the right sounds are made however nothing is recognised. Apparently the drivers for this unit are not supported on this windows system. It can’t see the drive. Damn that’s a problem.

My system
Does all the right stuff but unrecognised

Ok. I’ve had my thinking head on and just had a brainstorm. My brother in law over the road is notorious for not updating stuff. I called him and asked if he’d brought his new computer yet that he keeps threatening to buy and he says, “No, I haven’t Dave“. “Excellent” i tell him, get it warmed up as I’m coming over to use it.

I arrive at his house and he is curious as to what I want to do, I’m always going on at him to update and make his old computer safer, I keep telling him to upgrade it, and here I am asking to use it!

It’s a Windows 10 machine, slow is an understatement but he only uses it for casual browsing to be honest. I plug the cable in and then the recorder, I get a battery charging symbol and that is it. Hmmm.

Another brainstorm, I realise I’m using a charger only USB to micro usb cable instead of a data capable one. Another quick run back to my property and I take back a selection of cables. One of them worked, the drive was recognised and I was able to format the drive but I did it as Fat32. It worked to wipe the drive but I could not get the drive to boot up again without still showing a Disk Error message.

Disappointed I came home, I wasn’t giving up though. I dug out some other data cables from one of my old radio boxes and put it to my computer again, the drive didn’t show on the windows 11 system but it did something to allow me to be able to access the settings via the menu on the unit. I was able to go into settings and format the unit just as it should be via the units firmware.

No Voice records
Here we go, persistence pays off

After the format it indicated there were no voice records available, this was something I hadn’t seen before, we were finally getting somewhere.

It works, just have a look at the video below

All working

There are a lot of settings to play with in the unit. However the recording quality is superb if I say so myself, it’s so clear and balanced. The unit is now fully restored and working just perfectly. Add to that the fact that is cosmetically beautiful we now have a perfectly usable unit.

Result:

Working as well as the day it was purchased, this is probably the best £4:69GBP I have ever spent. A lovely unit, looks good, fits in the pocket nicely and has years of use ahead of it.

A cracking little device

I’ve really enjoyed this little project, it’s been a right challenge and I was determined not to give up on it. I was glad that I persisted and got it working again.

I wonder how many of these units, or those very similar to it have just been thrown to waste, when they were in fact very repairable. Well this one has been saved, and will be usable for many more years to come yet. (And I now know how to fix it, if it ever does break again😂)

Thanks for passing by. Always very much appreciated.