Shooting blind

Strange title. I know. But I had my first experience of it only yesterday. A photographic moment that I’ve never experienced before, but shall be using more of in the future.

My dear wife – totally unaware, as was i

I’m currently in the middle of repairing a Nikon Coolpix L820 16mp bridge camera. The camera has a broken rear LCD screen, and this is the only way of seeing the subject as there is no through the lens viewfinder. Whilst testing its limits and finding out about the faulty screen, I became aware that it sounded as if was working, it was making all the right sounds. So I threw an SD card into the camera to give it a try.

I was just pointing anywhere and pushing the exposure button, taking pictures of everything and nothing, I had no control on settings and functions only the exposure button. Anyway, I did this for a few minutes then transferred the SD card to a reader connected to my iPhone.

Nikon Coolpix L820

Wow, I was impressed with this one picture only, of my dear wife just finishing some lunch. She wasn’t aware I had taken it and neither was i.

This is the magic of photography.

The original was colour, I was so impressed with the sharpness, tones and colours in the picture. It’s not a particularly good picture, just a candid one of someone going about their day, totally innocent and unaware.

I love Black and white pictures, so I quickly converted the colour version via my phone.

I was in two minds as to whether I continued with this repair, as the cost of parts were rising the more I delved into it. This picture alone, changed my mind. I am going to finish the repair as this camera is too good to let go.

And I’m just amazed, that a random photo, that the photographer and the subject were both totally unaware of being taken, has come out so well. (All that has been done is a bit of cropping to align the subject)

The post for the camera referred to herein, will be published shortly.

Thanks for passing by.

Not the lottery, but for me – just as good

I’ve been after a couple of cameras for quite a while now that hold a great deal of sentimental meaning to me. This will become apparent when i publish the individual posts for them, but for now i just want to share the result of an auction i participated in on the 31st July 2025.

Today I’ve probably made the best purchase off of an auction site that I have ever made previous. I’ve been following a number of Canon A1s lately and they have all been going in the £120+GBP bracket, some even higher than that. Today I have lost out on two that sold for £93 for a damaged body and one for £121 that was just a body but of a much better quality. This particular auction I was watching was for an untested duo of cameras, a Canon A1 as well as an Olympus Trip 35mm. The Olympus alone normally commands the high £80GBP range and both of these were in this particular auction. I was just watching as this was going to sky rocket in my opinion, two good cameras from a respected seller who I have used before. Two minutes from the auction end, bidding was sat at £39GBP and I thought that any second now the price was going to go crazy, especially in the last 30 seconds. I put in a max bid of £55GBP for the lot, as I pretty much knew it would sail past that amount and go for a price in the £150-£200 price range. I hit the bid button with 20 seconds left on the auction….

You have won – congratulations!

I thought you’re having a laugh, no way. And then it came up with the winning bid being £39:00GBP no one else was bidding, crazy.

The A1 camera consists of the body, a winder, an FD 50 1:1.8 lens, a camera manual as well as a lens manual.

Postage was the grand total of £4:99 so my total for these two cameras was £43:99GBP. That is nuts, and to say I’m pleased about this is the understatement of the century. I have two of the cameras I wish for the most, and I have just landed the bargain of the day, I was in the right place at the right time. Wow. It’s unusual to catch other auction bidders sleeping, it will probably never happen again for me, it’s a very rare occurrence. Two cameras of this magnitude for £22:00GBP each! That’s unheard of.

I don’t know for what reason they are not working, as they both appear to be quite tidy examples. I have used this seller before and the posting above could also be worded such as to imply that the units may well not have been tested. But, that’s what this site is about, repairing old cameras and getting them working again. There’s no fun in talking about a good functional camera, that’s boring. We want the meat and potatoes as they say, we want to see things being fixed, or broken further….you never know with me.

Thanks for sharing my excitement at this purchase. It will all make sense once i’ve assessed the cameras and carried out any repairs.

Thank you for passing by. It’s always appreciated.

Canon Powershot S5 IS

What the listing stated:

This is a Canon Powershot S5 IS Digital Bridge Camera which is faulty and sold for spares or repair only.

The camera is in excellent cosmetic condition but when switched on there is an error message saying lens error please restart camera (see photo).

It takes 4xAA batteries and SD cards (not supplied)

A little bit about this camera:

Released in June 2007, the PowerShot S5 IS is the successor to the S3 IS model launched in April 2006, which was well received for its optical image stabilization, high zoom ratio and ample movie-shooting capabilities. Like its predecessor, the high-function, high-performance S5 IS features a 12x optical zoom lens equipped with a lens shift image stabilizer and realizes fast, quiet zoom performance by means of a high-speed Ultrasonic Motor (USM).

Compared with its predecessor, the PowerShot S5 IS delivers improved imaging performance through the incorporation of an 8.0-megapixel CCD sensor-increased from 6.0 megapixels in the S3 IS-and an upgrade to Canon’s high-performance DIGIC III image processor from the earlier model’s DIGIC II. Additionally, the S5 IS employs a 2.5-inch high-resolution (approximately 207,000 dots) vari-angle LCD monitor that offers a wide viewing angle to realize a high level of shooting flexibility, and includes a hot shoe for compatibility with Canon EX-series Speedlite flashes.

The new Canon PowerShot model supports the recording of high-quality movies by enabling users to make use of the camera’s optical zoom and Face Detection AF/AE functions. The S5 IS also offers an LP movie mode, which employs a higher rate of image compression to enable longer recording times for VGA movies, as well as high-quality stereo sound, and seamless transitions between the shooting of still images and movie recording.

Canon

I’ve been watching this one for a little while, it looks very good cosmetically and I’m surprised as I was the only one that bid on it. I’ve paid a total, including postage of £8:81GBP and I think that is an absolute bargain. An issue with these cameras has always been a motor/lens error. These motors within these cameras are an ultrasonic motor (USM) and to be totally honest they can be quite delicate and are known to give up as such, if even a grain of sand was to get stuck in the lens gear mechanism. They are delicate souls that don’t really like hard work 😂

A good clean is sometimes all that is needed to get these cameras working again, however I’m not going to get ahead of myself here, as I just don’t know what kind of pain the previous owner has inflicted on this camera. I just hope they have not been too brutal.

Assessment:

Now this is an absolutely beautiful looking little camera in pristine cosmetic condition. The previous owner has in fact been extremely careful and treated this camera very well.

The elephant in the room

The only issue that I can see is the one that flashes up on the screen, continuously when to turn on the camera. Even moving the telephoto/wide switch when starting up does not clear the fault. I really need to get the lens extended to see what’s going on. If I can do that without getting the screwdriver involved then that is even better.

Repair:

The lens remains stuck in the closed position despite there being movement with the lens iris, all other actions are as expected, just no extension of the lens turret. It does sound as if something is trying to move inside.

I’ve tried resetting and going back to factory defaults with no joy. I have been noticing though that when i put in a time and date, it is resetting every time i turn the camera off and then back on again. This is usually a sign that the small internal memory battery is dead, and as it’s probably been in the camera since 2007 it’s probably a good idea to change it. If I can find it. That is.

Panic over I have found the memory battery (CMOS) it was located in the battery chamber beside the SD card slot. It’s a small CR1220 coin battery and I have one of these in my battery box, so this will be replaced as soon as I get it home, now replaced all is working as it should be.

Back to the error. The error is more often than not caused by something, even a grain of sand getting in the turret area and catching in the workings, as these cameras are so delicate. We have to somehow get into the turret area to see if we can dislodge whatever is causing the problem.

I’d advise against using canned air here, as doing so would most probably dislodge the obstruction, however the route down the turret leads directly to the image sensor and you don’t want debris on that. Careful is the buzz word.

I cut a small strip of paper and feed this down between the tiny gap between the lens and the body. I manoeuvre this around the full circumference of the lens, and as I do I can feel some slight resistance as if something is there. I go around again and that resistance has gone. I turn the camera on and still there is no extension of the turret. At this point I put the mode dial on the camera into video mode and then turn it on. Straight away the turret extends and what looks like some grains of dirt fall from the lens area, at last we have the lens extended and there is an image on the LCD screen.

I clean the lens turret with an optics cloth and you can see it was very dusty inside, there had definitely been some debris enter this area causing the issue.

I operated the on off button a number of times to ensure the turret motion was smooth, and it was. There are no further obstacles in this area, causing the mechanism to seize.

I have taken a number of test photos trying out all modes and features and the camera is just perfect.

The camera operating as it should

I’ll show a few more photos below, once I have been able to download them.

Result:

This camera is simply a little beauty. It is probably one of the best looking of the later generations of bridge cameras but maybe not the best photo quality wise at 8mp. But who cares though, when you are as good looking as this?

The camera is pristine in my eyes, and for just over £8GBP this is a bargain. These fixes do not always involve a total dismantling of the item, sometimes it is so simple it’s unbelievable. Here I used a piece of paper and a lens cloth, that’s all. Now a camera destined for an old box in the loft and then the tip has been saved to carry on taking photos for a good few years yet. In fact here are a few photos that I have taken randomly around work, and around my garden.

I’m probably going to use this camera with its pivoting screen to construct videos to display on this site regarding future repairs, I’m going to ensure it gets good usage under my ownership.

Did I tell you how much I love this camera and how handsome it is? Oh, I did, sorry about that, I get really carried away with these older cameras, I just wish everyone else could get as excited as I do, and maybe so many of these wonderful machines wouldn’t then, just get thrown out with the bath water.

Thanks for passing by. It’s always most appreciated.

Sticky, Rubber camera grips

Anyone who has had an 80s/90s/00s camera through their hands would have experienced this at some point. During this time period many if not all camera manufacturers went through the phase of putting rubber hand grips on their cameras. Aesthetically pleasing, and ensuring a good grip of your new “Expensive” toy. I guess, they thought they had got it right. But as with all these good ideas they often come back and bite you right on the bum at a later date.

My particularly sticky Nikon D70

Ok there were probably no recalls regarding this issue, it’s just affected the price of these goods on the second hand after market, and more than likely a perfectly good unit has most probably gone to landfill for no other reason than “Feeling sticky”

Let’s look into the reasons why this occurs.

It’s pretty much down to a process called Vulcanisation. Vulcanisation is a chemical process that hardens rubber by cross-linking polymer chains, making it more durable and elastic. This process, often using sulfur, heat, and other additives, transforms natural or synthetic rubber into a material with improved properties like resistance to heat, cold, and deformation. 

However after many years, the process begins to break down, this causes the rubber to become sticky and in some cases the rubber just breaks down causing traces of rubber dust all over the place. Add to that the normal oils from fingers and palms and the stickiness then becomes highly noticeable, and makes for a very unpleasant experience.

We can’t stop the progress of the degradation, we can however do something about the sticky state, maintain good quality and make the use of the item as pleasurable an experience, just as it was when first purchased. Many believe the stickiness is down to the way the item is stored, and it not being used on a regular basis, as there is plenty of evidence out there of similar aged cameras not suffering from the issue at all, as they are used daily, namely by professional types where these cameras are tools of their trade.

It involves some work, and patience. I am writing this post as I have 8 cameras that i am currently working on, all Nikon D70/D70S and they all have this problem, and they date from 2004.

A load of very sticky Nikons

I use a process that you will easily find on line, the most simple process and it involves using a substance called Isopropyl Alcohol, my one is 99% pure, (also known as rubbing alcohol) I don’t think the purity of 99% is essential but i use it as i have plenty of it around, what with all the circuit board work i do, and the cleaning they also require.

Some people have had results just using a dry cloth and no chemicals, patiently rubbing and rubbing, some for a few hours at a time, until all the mess is removed. If that’s the way you wish to go then fine, i haven’t got the time for all that, i’ll be talking you through the way i do it below, with a chemical.

My technique is simple, lint free cloth and some cotton buds are all that i use, along with a tissue wipe (Such as armoral, or a car cockpit cleaner solution with a dry cloth) and a cocktail stick to finish. The reason for the wipe will become clear at the end.

My Guinea pig for today is a Nikon D70 I have requiring repair. It is a particularly “Sticky” individual and will be a good candidate on how to deal with this sticky situation. This is the process I use on all my equipment that has rubber such as this as part of its structure. It’s worked for me for many years, some people say that it will need doing again after a short while, that’s never been the case for me, and there are a number of documented cases on line where six years after this treatment has been done, there is no repeat of the initial problem. The rubber remains good.

Using a small amount of IPA on a lint free cloth gently wipe the area of concern and you will see the stickiness start to lift, it looks like a glue.

Make your way around the whole camera paying particular attention to those really sticky areas. The IPA evaporates really quickly so you get to see results really quickly. If after one try the stickiness remains then try another application. A good indicator is that when you use a fresh part of the cloth, you see less dirt come off with each application. When you put an application on and come away with a clean cloth, your job is done.

The cotton buds are used for getting into those inaccessible crevices you can’t get into with the cloth. As before as they stay cleaner and pick up less dirt your work is done. All this cleaning and moving about of dirt sometimes transfers the dirt into creases and joins between the rubber and the camera body, this is what the cocktail stick is for, to get into those small gaps and scoop the dirt and debris out. Complete with a final application of IPA in this area and the dirty work is now done.

Now earlier I mentioned about using Amorall wipes or a car cockpit cleaner. Sometimes this process can dull rubber, as you have just removed the layer that was providing the gleaming glory back in the day. You can’t have it all your own way but a good quality interior dashboard cockpit cleaner really does add some shine and life to that old camera and really does do a good job of restoring it. I use Auto Glym interior shampoo on a lint free cloth and apply this by gently applying all over the exterior of the camera. It is now exceptionally clean. A quick rub over with a dry cloth once this is dried and what more can I say? This is a different camera, looks stunning and has lost all trace of stickiness and dirt. Now it has that extra layer of protection as well, it’s now a pleasure to behold.

The finishing touch.

This little task probably took just over 20 minutes to achieve and gives so much satisfaction to me as you can see a cameras appearance change in front of your very eyes, and anyone can do it. No camera deserves to go to landfill just because it has this sticky exterior, it’s simple to do and can revitalise an old and much loved camera.

I hope this has helped with dealing with the stickiness issue, if you ever experience it. I have even heard reports that a good quality window cleaner can also give similar results, but I’ve never tried it, so there really is no excuse if you have a camera in your ownership needing similar attention.

Many thanks for passing by. You legend👍

Mamiya M Autofocus – 35mm point and shoot camera

What the listing stated:

Mamiya M point and shoot camera. It’s in fantastic original condition and is cosmetically excellent with original case and lens cap included. The lens appears to be bright and clear from the front. 
HOWEVER…when batteries are inserted the shutter does not fire and I suspect it is jammed somewhere. The lights come on and it goes “click” but the aperture does not open, nor does the film winding do anything. 
For spares or repairs only, I’m sure somebody with the know how could get it up and running again. 
Priced super low as I want it shifted and can’t bring myself to bin it! 
No returns please

EBay

Here’s a little bit about it:

The Mamiya M is a 35mm autofocus compact from 1982.  It has a boxy plastic shape, with a fixed Mamiya Sekor 38mm f/2.8 lens.  The lens is four elements in three groups.  Exposure is fully automatic, based on the film speed, where the ISO is selected via a dial around the lens. Film speed available is 25 – 800 ISO.  

The metering cell is located just under the lens, but within the lens ring.  This allows for the metering to take into account any 46mm filter screwed onto the lens.  That is assuming it is not a graduated filter.  Fastest shutter speed is 1/500thsecond with the slowest at 1/8th.  The camera is always on, except when fitted with a specially designed lens cap, which triggers the off state.  There is a strategically placed switch it pushes against on the right side of the lens.  Most of these caps are lost, including mine.

Photothinking.com

I don’t know what attracted me to this camera, but the fact the seller just wanted rid of it at a cheap price was a starting point. It was advertised as £4:36 GBP and £2:45 delivery, a total of £6:81GBP. I bartered a bit and got it all in for £5:44GBP so I got it a little bit cheaper, a bargain if you like.

Mamiya has a great reputation for building high quality lenses. They were only in the 35mm autofocus point and shoot sector for a short while before immersing themselves totally into the medium format camera market. This 35mm camera was only in production for about a year or so, even though quite a few were produced, we are looking at the low hundreds of thousands, not the many millions, so the camera itself was not a major mass produced and marketed unit. It is a plastic preformed body unit. Known in polite society back in the day as “A plastic fantastic”.

If a Mamiya camera had a blue ring around the lens, specifically on its other models, it denoted a higher quality lens type, it was never confirmed this was the case with these small autofocus 35mm cameras, though many believe it is still the case. Photo quality with these little units was generally of a very high quality.

Lens caps with these cameras are very rare, this one has one and it is the original, and i suspect (from what I see in the picture) that there may be a small crack on the side of this one, but that is not an issue. This lens cap is integral to this cameras operation, as when it is placed over the lens, it turns off the camera, without it the camera remains live at all times, and would soon lose its power. It is an early power conserving device if you like. The camera looks to be in overall good condition, probably down to being stored in its original case.

You can view a lot more than I could ever tell you, just by watching this review by Mr.50mm that was posted earlier this year.

Excellent recent review

Since reading up a little on these cameras it appears that I may well have bagged a bargain, if it ever works. And I also believe the seller may well again be unaware of the operation of this camera and it may in fact be working just fine? Who knows? I have my suspicions but we will just have to wait until it gets here for assessment.

Below are some sale prices relative to this camera model that are currently selling on EBay, some extremely high prices compared to what I have paid today:

Current selling prices for this model

It’s plastic and so 80’s. And people obviously loved it. I’d like to be able to get this camera working again, and would love to run a roll of film through it to give it a test run. But first I have to assess it and see just what is wrong with it. I have a roll of old film available to test its “faulty” rewind system, and I have all my tools ready to crack it open and get inside, if I have to. So let’s get at it….

Assessment:

It’s arrived and I must say it is in an excellent cosmetic condition, probably down to being kept in its original Mamiya soft case. The lens cap I thought had a crack in, is actually broken, probably beyond reasonable repair, but at the moment that is not important. Let’s put that to one side for now.

The actual camera is partially alive. When batteries are installed there is a red light that appears on the right rear side of the camera, this is the film transport light and should extinguish when transport is complete. The flash switch sticks a little, and when the flash is clicked into position the distance sensor light on the lens activates however the flash does not charge. The winding system is inoperative and does not auto wind at all. The shutter does not operate, despite the shutter leaves being able to move when gently coaxed.

There seems to be partial electricity throughout, this could very well be the issue. There just doesn’t seem to be a uniform continuity throughout the camera. This will need to be looked at. Something very weird is going on inside.

Repair:

I’m really annoyed, closer inspection shows there are 6 screws missing and someone has been inside this camera prior to me. Again I think I’ve been stung by the EBay curse of “Spares and repairs- no returns” will I ever learn?

I’ve removed the remaining screws, and had to peel off the rubber grip to access and expose the motor and associated component board in this area. There will need to be a lot of cleaning here before gluing it all back in place.

I’ve managed to get the flash charging light illuminated, and a current of 214v in the flash confirms that the Flash capacitor is holding a charge and more importantly, receiving a charge from the battery circuit. But I cannot get it to fire. There seems to be an issue with the shutter mechanism and the related electrical circuit in this area. The motor is not working, it’s either dead or not receiving power. I need to look in this area a little more thoroughly.

Front fascia removed

I’ve now removed the front fascia and now have a good view of the overall workings inside the camera.

Ive taken out the lens and the leaf shutter, these seem ok and are working freely when operated. To me it looks as if the mechanism that triggers the leaf shutter is either seized or the variable capacitance system located at the top of the camera, that is basically just a needle on a circuit board connected to the focus light, could be at fault, it does not freely move on each camera actuation as it should, and this is not a readily available part.

That faulty part of the board
Misfiring- faulty

It seems the deeper I delve into this camera that I am finding more issues, and I’ve just found two parts that are incorrectly installed that are on a cog system connected to the motor. I’m fighting a losing battle as it appears the person who has been here before has probably added to the issues of this camera in their attempt to fix the original issue.

On top of the missing screws I’ve now found a missing capstan cog related to the leaf mechanism that would help explain a certain lack of movement in areas. The motor is dead, I’ve taken it out and used the bench power supply and it is non responsive. Even after spraying with some contact cleaning fluid and sitting there spinning the axis to get the solution absorbed, there is still no response. It’s totally dead and will require replacement.

Result:

Well. Once again I have been mislead by incorrect descriptions on the auction sites. It’s a shame really as this is a lovely camera and if it had not been tampered with inside, I’d probably be posting a different review today, one that would be more positive. With screws, cams and cogs missing I was pretty much set up to fail here.

I’ve reassembled the camera and it is now back in its pouch. The positives are that I have learned a lot about how this camera operates, and just dismantling and reassembling the camera allows you to learn a lot about it, and the technology used during that period in time. All the screws that I removed have gone back into place with none leftover, yet another positive.

So it’s a failure I’m afraid, but it will be kept and either used as spares or I will obtain a suitable donor to get this one up and running, it will not be disposed of in any way. It will be reused. I’ve only paid a small amount for this, it’s worth it for the spares alone.

I have already set up a notification on the auction sites for when another suitable camera becomes available. I will update this post or post a new one that incorporates either the repair of this unit or its use as a spare parts donor, when that time comes.

Thanks for passing by. Its appreciated.

Onkyo TX-NR717

7.2-channel home theatre receiver, Internet-ready

Onkyo TX-NR717

A bit of a different one here, i get into work one day earlier this week, to be told that one of my colleagues in a different area (Nottingham) will be calling with something to discuss. That call occurred today and the discussion was about his home theatre surround sound system that had packed up on him, and would I be willing to look at it for him to see if I could manage a repair. Though it’s something I don’t usually do repairs on, I said why not? I need to look into other areas of repair and as long as it wasn’t urgent and there was no urgency, then I’d certainly look into it for him. It turns out there is no hurry and he will get the item down to me in the next few days.

So I now have a task, that I am really quite excited about. And for obvious reasons I want to do a good job.

Here’s a little bit about this item

With the power to fill large rooms with THX certified sound, this cutting-edge receiver is ready to integrate and distribute entertainment throughout your home. More than a home cinema processor, the TX-NR717 allows you to access music on PC, stream from MP3 tunes, explore online radio, or connect your iPod/iPhone to one of two USB ports. You can distribute any of these various stereo sources to other rooms for house-wide entertainment. With a total of 10 HDMI connections, this receiver converges HD content from all your components – even your smart phone media via a front side MHL/HDMI – and provides easy input selection with InstaPrevue technology. HDMI also enables intuitive GUI with overlaid quick set-up menu. Video upscaling to 4K, Audyssey DSX seven-channel sound expansion, and Audyssey 2EQ room correction are all included. Sound quality is quite simply the best in class, with powerful WRAT amplifier, three-stage inverted Darlington circuitry, and discrete output stage components delivering an otherworldly entertainment experience.

Onkyo TX-NR717 – AV network receiver – 7.2 channel – black

Release date: April 2012

Onkyo

I’m looking forward to this project, a little out of my comfort zone, but it’s the best way to learn about how these things work. And I need some exposure to these types of systems and the issues that can occur within them.

Assessment:

This unit has just about reached its teenage years, and if this can’t be repaired then the owner will be looking at his alternatives. However replacement units have also grown in both features and price now, so if this current box of tricks can be given an extended lease of life then everyone is a winner, and one less item gets to go to landfill.

I have downloaded both the instruction manual and the service manual, so I am equipped with a full list of components as well as the official schematic diagrams of the circuitry layout. I’m suitably prepared for this one.

The report from my work colleague is that it was working fine up until a week ago when it would just not switch on. He has replaced the two quick blow fuses that he saw when he opened the unit, however the issue still remains. He hears clicking when he turns the system on, this could be an issue in the standby circuit, however I will have to wait to have the unit in my possession to investigate this any further.

Straight to the point…just how I like it

Just got a message from one of my colleagues at work to say the parcel from Nottingham has been collected. Just love the straight to the point way these guys inform me of any safety issues and concerns they may have 😂

More surprises

And on opening the box, more surprises. Biscuits, they are my downfall, and don’t ask about the Aubergine, we won’t go there, that’s a private joke 🤦‍♂️

Right, serious head on now and I’ve plugged the unit into the mains and without touching anything at all, all I can hear is a metronomic clicking that appears to be emanating from the power board circuit area. This will be my first port of call.

Repair:

There are two well known issues regarding these units and I am going to look at both of these before getting in any deeper. The first issue is around the relay and its associated 150 Ohm resistor on the main power board, the second issue is around a defective capacitor on the standby board, and eliminating one issue will either highlight, or clear the other. If both issues are addressed with no change to operation, I will have to look in to the issue a little deeper.

Issue one relates to a problem with the relay on the main power board. Most people don’t realise this but pressing the power button on an Onkyo receiver does NOT turn off the power.  The power button merely sends a signal to the MAIN CPU telling it to close a relay (to turn the system on) or open a relay (to turn it off).  When you press the power button on an Onkyo and nothing happens (no clicks, no brief lighting up of the front panel) the root cause is often a blown coil in the main power relay. 

Main relay is the item under the thick coating of white silicone at the top of the picture

Beside the relay to the left is a resistor that should be reading 150 Ohms. This particular one is reading 144 Ohms so is reading a bit lower than expected. This could be sufficiently low enough to allow the relay to fail. So at this point this looks like a possible point of failure. Either way they need to be replaced before we can advance any further.

Silicone removed. The faulty resistor is within the red circle

I need to obtain these parts, the relay will need to be shipped from China, and I need to check my resistor stock to see if I have a suitable replacement resistor. The relay also should have a similar resistance to the resistor beside it, the healthy range for the relay is between 80-200 Ohms.

I have removed both components from the board to test them out of circuit.

The resistor beside the 9v relay is a 150 Ohm rated resistor. This one reads at 144 Ohms and is to the lower end of the rating of +/- 5%, it would probably suffice, but i’m going to replace this one just in case. The only other resistor in this circuit is a 47 Ohm resistor and that reads exactly as it is rated, so there is no issue there. I believe the bone of contention here is that the relay is 9v sitting upon a 12v power rail. This is probably the reason issues have occurred with these units in the past, and looking at a number of forum posts, it is quite acceptable, even recommended to use the higher voltage 12V versions. I’m sticking to the original design on this repair though, I can only presume the 150 Ohm resistor placed just before the relay has something to contribute in controlling the operation of this relay. Maybe that’s a design fault within this model, I just don’t know!

I have tested the relay using a multimeter and a 9v battery. I have used the battery to short across the power poles where I can hear the relay clicking, but when the relay is on there is no continuity across the other two pins when there should be, this isn’t happening so I suspect this relay is stuck in the open position. The Ohms rating across the pins shows 336 Ohms, so i am lead to believe this could be a problem with the coil inside it, as it shouldn’t really be that high. I understand from what I have read, that a rating between 80-200 Ohms is classed as acceptable, and outside this range could indicate that there is an issue. I’ll just have to wait until the new relay arrives and carry out some tests to see the comparison between the old and the new relays.

336 Ohms is that an issue?

I’ve dismantled the cover from the relay to get a look at the coil. In the little video below you will see the coil switching, however you will also see the contacts meeting but there is no continuity. The contacts have a coating of contamination on them probably from age or arcing, it looks like a carbon deposit, as when they adjoin there is no contact made, no flow or continuity, unless you put light pressure on the contact and then you get the continuity. It is at fault, it shouldn’t be doing this. A clean of the contacts might breathe some life into it, however give it a couple of months and you’d probably have to remove it again, and the contamination isn’t the only issue, don’t forget the relay reading that appears too high. A new relay costs less than £4:50GBP delivered from the other side of the world, so I might just as well go for a new relay. It makes sense.

Inside that failed relay

I’m not going to venture any deeper into this unit yet, not until these components arrive and I can get them back into place. I want to move through this fix confidently and slowly, have a better understanding of what is going on and not leave myself confused with bits and pieces everywhere, clueless to what is occurring. I wouldn’t achieve anything by working like that. Knowledge is king here and I’m here to learn. And I do now have the schematics available to follow.

I’ll have to wait about 2 weeks for the relay to arrive so I’ll just have to put this repair to one side and on hold until then.

Ok the new relay has arrived and the first test I did on it was to take an Ohms reading of the coil side. Now if you have paid attention, you will have seen that the old relay was reading 336 Ohms when it should be somewhere between 80-200 ohms. This new relay is reading 158 Ohms and I feel a lot better about that, it falls right in between the expected spec.

Old relay reading on the left versus new relay on the right

And if you want to see the relay actually working and displaying continuity then have a browse at this video below, the polar opposite to the first video I posted above 👆

The new relay with good continuity

The resistors I ordered have now come through and have been tested, I have a couple of candidates displaying better test results, so we can now look at getting these two components back in place to see what occurs.

I’ve put in place a new resistor, slightly higher value than the previous one coming in at 147.4 Ohms. It falls within the 5% tolerance so should be fine.

147.4 Ohms

The relay has been soldered back in place, really simple just four points to solder and we can now reassemble the power board back into the chassis.

I’ve taken the unit into the garden at my wife’s request, as I have to use some high pressure air to give it a good blast to get rid of some dust and furballs. This has worked well and quite a dust cloud was witnessed across the garden, it’s fair to say it’s a lot cleaner inside than it was.

I’ve now put the case back on and the unit is now sealed from prying eyes and inquisitive fingers. I’ve given the entire case a good polish and I must admit it is looking nice and shiny and very presentable. I just have to hope and pray that it turns on. I see no reason as to why it shouldn’t but you just never know. You can always fix one problem only to be chasing it around the system as it develops into another fault, repairs can sometimes go like that.

Let’s plug it in and see what happens 🤞

Result:

I’ve plugged it in and turned the power on. No bang, only silence, just a single click when the power went on, this is good. When the power is turned off you hear the standby relay do the same, all is as it should be.

The standby relay has clicked in when turned on at the power socket, and is not repeating that metronomic sound that was there originally. Superb. Now to turn the power button on, on the front panel.

We have a display. Excellent it is working.

All buttons are operational, I don’t have the surround sound speakers as they are at the owners house in Nottingham, i also don’t have the remote here that also allows me to do other tasks, however that is not important as the unit is now operational and displaying what it should, and once it goes back into his media wall with all his speakers and other related sound and Av equipment, i am confident beyond doubt that it will be operating just as it did prior to this issue developing.

I will be handing it back with the advice that should the issue occur again we look at updating the relays with new 12v versions to replace the current 9v ones. But I doubt the problem will re occur, and this repair should see out the next few years at least and by then this unit will probably be sold, or passed on to someone else when he decides to upgrade his system.

Below is the little video I sent my colleague showing him the unit now working

It’s now working

But for now, it works. I am pleased as punch with this repair as I have stepped out of my normal comfort zone here. I have been extra vigilant, studied many a schematic diagram and learned a lot from this project. I didn’t rush ahead of myself and took this repair one little bit at a time, testing all along the way and addressing each issue in the order that it has arisen. And I’m damned happy with that.

It’s been a learning project for me, and I’m glad I’ve undertaken it. Life is for learning, and I’m living that life.

Many thanks for passing by, as you well know it is always very much appreciated.

Edit:

Today the 29th July I have had a message back from my colleague to say that he now has the unit back in his media wall. And I’m pleased to say it’s working perfectly. He’s very pleased and so am I.

Back in place and working fine

He’s pestering me to bill him, but I’ve told him that I’m only taking one currency and that’s not money or crypto. No, my method of payment will be in Biscuits. I told you I’m a Cookie Monster and this entire repair only cost just £4:17GBP. That’s not a lot of Cookies, but it’s credit in the bank if these guys need any further repairs carrying out. Word of mouth, works wonders.

Fujifilm Finepix S8000fd

What the listing stated:

ALL ITEMS IN THIS LISTING ARE FAULTY 
FAULTS MAY VARY BETWEENS ITEMS

SOLD AS IS

NO RETURNS

EBay

I’ve purchased three cameras as a job lot in an auction. All of them have issues but the issues have not been clarified. This is very much a “Suck it and see” auction where I get what I’m given. I’ve paid £24:22GBP for all three and that includes free postage. I’ve purchased from this seller before who is a bonafide Camera business based in South Wales. He has no time for faulty items though, quick in and out is his way of working, no time to fix stuff. I’ve got three good cameras in this bundle and this works out at just about £8:00GBP per camera. And where can you get cameras like this for those prices nowadays.

I really don’t know what the specific issues are with this camera, only that it appears to have the mode selector dial missing from its top. I guess we will just have to wait it’s arrival for a full assessment. In the meantime here is a little bit about it.

With the release of the FinePix S8000fd, Fujifilm brings to market a smart-looking digicam with an 8-megapixel imager, one of the longest zoom lenses in the market plus a compact, and relatively light, camera body. The cheapest of three similarly featured long zoom cameras in the current market (see table below for a feature comparison), the S8000fd has the distinction of being able to use both xD-Picture Card and SD cards (including SHDC), which are fitted in a single dual-format slot. Release date July 2007.

Photo review newsletter

Assessment:

Well, to be honest, for potentially the worst camera in the box of the three that were purchased, it works just fine. Apart from that missing mode selector dial on the top of the camera. You have to use a pair of tweezers to get each mode to appear, but they are all there and the zoom and flash all work and it takes pictures fine, just as it should.

Apart from the issue with the dial, all that is really needed is a little clean up, and even that isn’t that bad.

It does not justify being used as spares and is far too good to just be disposed of. I’m going to try and repair this.

What a bonus!

A little bonus was that there was a 1Gb SD card in the memory slot that works. There were also 4 rechargeable batteries in the camera that after a while on my charger, have fully recharged, and this makes the deal an even better one and quite a bargain to be honest with you.

Repair:

I’ve tested all systems, menus and functions on this camera and there really is nothing else wrong with it. It’s far too good to be used as a spares camera and deserves to be repaired.

Missing mode selector dial

I have two options here, either buy the mode selector dial on its own from our friends in China, or buy another donor camera in a far worse state and available for about the same price as getting the dial from China. I just have to wait for that donor camera to first become available. I’ll give it a couple of weeks and if nothing comes up then China it is.

In preparation for whatever route I decide to take, I’ve decided to do some prep on the old camera and get the old selector dial mechanism taken out ready for the new dial to be put in place.

I’ve dismantled the camera unit to be able to access what is left of the mode dial switch.

This wasn’t too awkward to dismantle, half a dozen screws and a small plastic prise tool was all that was required to reach this point. There was some protectorate covering the metal frame of the switch housing that was contained by four tiny screws. Once this was loosened the housing came away and I was able to remove what was left of the old mode dial that had originally been in place. There wasn’t a lot left.

Remains of previous dial

The camera now sits in this position of being dismantled whilst I source a new dial to replace. As stated I have two options of buying a new dial either from China, or by getting a damaged camera as a spares source, and I’m currently looking at the latter as this could be purchased for about the same price as the dial from China, and would allow me a few more spares.

I’ve purchased another unit as a donor. The unit in question has a damaged LCD screen. I’m going to use that camera as a donor for the mode dial I require.

The donor camera has arrived. And to be honest it looks ok. It has been dropped at some time as the lens has a scratch on it, and the Rear LCD screen is damaged. That’s about it.

I’ve taken some pictures with this unit and the camera is working fine, as you can still view pictures you have taken through the viewfinder. It works ok, but I need this mode switch to fix another camera, so i’ll probably just use what remains as spare parts due to that scratch on the lens.

Let’s get the donor camera disassembled to harvest that mode switch.

There are only about six screws to get the back of the camera taken from the body, you just have to be careful not to damage the ribbon cable that is connected to the mode dial assembly that we are going to use today.

I did all the disassembly of the original camera to save time, and it took about 5 minutes to get the donor camera stripped down. Once inside there is some insulating material covering the switch assembly, this has to be removed but cannot be reused as it has lost its adhesion. When reassembled I have used electrical Kapton tape to replace the original insulation. This has worked just fine.

New Kapton tape insulation

Assembly involves checking that the button settings relate to the markings on the camera body, this is important at this stage as the last thing you want to do is reassemble the camera to find out that you have the dial in the wrong setup. Do it now and save time and reduce the possibility of damaging the connectors and body clips.

Before and after

Result:

We have a beautifully restored and working and fully functional bridge camera that takes good snapshot photos. It’s not high end, it’s very much a learner camera but good at documenting what’s going on around you. Its mode dial that was missing is now working fine. A little polish and it has come up looking lovely cosmetically. it’s a good little unit.

Here are a selection of snapshots from around the home just to prove it’s working as it should. Nothing special, it just does what it was always built to do. Take snap shots.

It works. I’m happy. And another camera has been saved from landfill.

Thank you for passing by, as always it’s most appreciated.

Panasonic Walkman cassette player RQ-P250

At a family gathering this weekend, an elderly family member approached me and asked if I could take a look at his Panasonic personal tape player, and maybe get it back up and working.

Who am I, to turn down such an invitation, so I took it on and promised him I’d have a look into it. There is, “No rush“ I was told. Just as well, as it’s busy in every aspect of my life at the moment.

Here’s the spec:

Type: Auto Reverse Cassette Player

Tape Type: type I, CrO2, Metal

Output: 20mW

Battery: 2 x AA

Power Supply: RP-AC33 (3V DC)

Dimensions: 114.2 x 84.4 x 33.1mm

Weight: 156g

Finish: black

Year: 1993

Hifiengine

Panasonic RQ-P250

Assessment:

It’s well used, and has always been and if I can get it working, will continue to be so. At the grand old age of 79 my brother in law is not about to change his ways and is quite comfortable listening to his old Cassette collection whilst out and about, on trains quite a bit of the time, as he travels up and down the country. He’s a lovely old fashioned set in his ways guy and we wouldn’t have him any other way. It would be blooming lovely to get this back to him working again.

It’s scarred, been well used but looked after, apparently it’s gone from playing quite well, to slowing down and dying completely. I think I know what the issue is but I’m not going to curse myself by saying I know what is wrong, when it actually turns out to be something totally different.

On the Beach – Chris Rea

And I love his choice of music. Let’s get this repair underway so we can listen to Mr. Rea in a lovely crisp sounding manner befitting of an 80s rock star.

Repair:

Batteries in place, earphones connected, push play. No movement from the capstans, and even when put in forward and reverse there is no movement from either capstan. I can hear all the electrical noises such as the tape head picking, and I suspect at the grand old age of 32 years old that the drive belts have probably given in. Let’s open it up and have a look.

And just as I thought. Two drive belts in here, they are both loose, one though is so loose that it has wrapped itself around the two capstans, no wonder it wouldn’t start up.

I have plenty of these belts spare, I just had to sort out the two closest matching in size. Too slack and you introduce warble, too tight and it will be off speed, you need to get it just right. Adjustments can be made to the motor speed but this will only come back to bite you once the belts wear in.

I’ve put two new belts in place, and at some frequencies there is a little wobble, but with Dolby switched in place this can be removed digitally, this will settle over the coming weeks after more use.

I have used some silicon grease on the cogs, I have put contact spray in the motor and the volume controls, and used IPA to clean all the tape contacts and capstan wheels and posts, it’s basically been given a little service to see it forward for a while longer.

Body now reassembled, new batteries put in place, it’s time to test it.

Result:

A quick polish, to tidy up, won’t get rid of the deep scuffs, just makes it a little more presentable. Cassette inserted, headphones plugged in and as expected it’s working just fine, we can hear Mr.Rea in all his gravel voiced glory. So can you, in this video snippet below, that hopefully won’t get a copyright strike 🤞

🎶 On the beach 🎵

So there we have it. Another item brought back to life with about 30 minutes work. It’s going to make someone’s day, and I’m as pleased as punch that I could play a part in contributing to that.

There you go. Hope you enjoyed this quick fix.

Many thanks for passing by. Always most appreciated.

Fujifilm Finepix S2 Pro

What the listing stated:

ALL ITEMS IN THIS LISTING ARE FAULTY 
FAULTS MAY VARY BETWEENS ITEMS

SOLD AS IS 

NO RETURNS

EBay

I’ve purchased three cameras as a job lot in an auction. All of them have issues but the issues have not been clarified. This is very much a “Suck it and see” auction where I get what I’m given. I’ve paid £24:22GBP for all three and that includes free postage. I’ve purchased from this seller before who is a bonafide Camera business based in South Wales. He has no time for faulty items though, quick in and out is his way of working, no time to fix stuff. I’ve got three good cameras in this bundle and this works out at just about £8:00GBP per camera. And where can you get cameras like this for those prices nowadays.

I’ve just read a blog where a guy had one of these cameras from new, and in 2002 he had paid £1550.00GBP for this camera. Wow, and here i am 23 years later paying the grand total of £8:00GBP for one. Even if I don’t get it working, I’m happy with that.

Now this particular camera had two issues in its lifetime that caused concern, and one of them meant it was pretty much game over, and that one was the CCD issue that used to plague this range of cameras. Fuji released a whole bunch of these cameras with a faulty CCD that had to be fixed under a recall. They built sufficient replacement CCDs to cover the recall and that was about it. There were no remaining CCDs left and at that point what was left had become as rare as hens teeth. If you suddenly developed that faulty a later date, then tough…you were stuffed.

Serial numbers affecting CCD problems are listed below:

Model Serial Number Range 

FinePix S2 Pro 31A127**~31A143** 

32A000**~32A039** 

33A000**~33A007** 

34A000**~34A004**

Fujifilm

The second issue was with a batch of these models that had a “bad” resistor in the power circuit that prevented lock up if there was a power spike, if this failed then the camera just stopped and you were stuck. There was another recall on the second issue but there is probably a lot of cameras out there that again weren’t part of this recall. And I guess owners were pretty fed up of recalls at this point and were off loading their equipment as quick as they could.

The serial numbers regarding the lock up problem are listed below:

Between serial numbers 24L00441 and 24L00680
Between serial numbers 24L01057 and 24L01256
Between serial numbers 24L01553 and 24L01863
Between serial numbers 24L10257 and 24L10608

Fujifilm

My camera serial number

Above you can see the serial number for my camera. Thankfully my number falls outside the range of any of the cameras inflicted with either problem, so it’s fair to say (Fingers crossed 🤞) that I shouldn’t suffer with any of the known issues with this unit. In layman’s terms I think i may well have dodged a bullet here.

I did speak to the seller regarding the fault on this camera and he stated it was just a general error code on the top screen. There is a general error that arises occasionally regarding certain lenses where they have to be locked on their minimum aperture for the camera to work properly, however I’ve not attached a lens yet so this cannot be confirmed.

Here’s some history:

The Fujifilm FinePix S2 Pro is an interchangeable lens digital single-lens reflex camera introduced in January 2002. It is based on a Nikon F80 (N80 in the U.S.) film camera body that was modified by Fujifilm to include its own proprietary image sensor and electronics. Because of the Nikon body, it has a Nikon AF lens mount and so can use most lenses made for Nikon 35 mm cameras. It is autofocusing, with an electronically controlled focal plane shutter with speeds from 30 sec. to 1/4000 sec., built-in exposure metering and pop-up flash. Its ISO film speed equivalents range from 100 – 1600. The S2 Pro also has sound recording capability. The camera is no longer in production, having been superseded by the Fujifilm FinePix S3 Pro in February 2004.

Aside from the Nikon lens mount, the camera’s principal distinction is its 6.17 megapixel photo sensor. Known as the Super CCD, it is unique in having its photodiodes oriented diagonally rather than horizontally and vertically as in all other DSLR cameras. This allows the use of a sophisticated interpolation system that produces an output image equivalent to 12.1 megapixels. The apparent resolution of images in this interpolated mode lies somewhere between 6.17 megapixels and the 12.1 megapixel interpolated output.

A huge number of these cameras were built using a Sony sourced defective CCD that was subject to a recall by Fuji. The recall ended when the stock of these replacement CCD’s was depleted. There is word that no other stockpiles exist of this Super HAD CCD, making these cameras that are found with the purple or black tinted image problems extinct, only usable for parts. The Fuji F700 used a similar defective HAD CCD, but in 3.1/6.2Mp size. That camera has met a similar fate.

Wikipedia

So let’s hope that we can get some pictures out of this unit. We just have to wait and see what arrives.

Assessment:

Well the camera has now arrived, and I must say it is in an absolutely beautiful condition. Cosmetically there isn’t a scrape or scratch, all screens are scuff free and it looks as if this unit has been well cared for. It just needs a wipe over to clean. The package is just the camera body with no extras such as a body aperture cover or neck strap, but who’s worried about that, they can be procured at a later date.

These units are quite power hungry requiring a total of six batteries. 4 AA cells go in the base and two Lithium CR123A batteries go in the grip. These batteries work in unison, one set handling the basic camera functions whilst the other deals with the capture and processing of images. It’s a strange affair, loosely based around the same setup that was originally on their film based camera counterparts.

I’ve had to order the lithium batteries, however I can still get displays and Information using just the AA batteries in the base, basically it is semi functional in this situation.

The lens mount is a standard Nikon F mount, I’m going to have to search through my equipment to see if I have such a lens, I suspect I don’t, so I may well have to purchase a small lens purely for test purposes. I have some other Nikon repairs in the queue, so a lens to have for test purposes wouldn’t really go amiss.

The unit takes either a CF card type II or a Smart-media card (Max size of 2Gb on both) that is located behind a hinged section on the rear of the camera, these work fine and have no bent pins.

Media card ports at the rear

With batteries in place I get the full range of menus, and nothing comes across as suspect at all at this stage in the assessment.

The top menu – no lens attached to test

The top menu by the exposure button is the only “F” indication showing, I have no lens attached so this might be the reasoning for that, but if I do put the menu into manual mode I get the full range of shutter speeds and can even operate the shutter, the shutter seems to be working at all selected speeds with no issues as far as I can see.

Some of the shutter speeds available in manual mode

All other menus are available and I’m even able to format the CF card via the cameras menu. The picture you see on the screen was taken on another camera. It wiped fine so no issues here.

Various menus and the screen after a format was completed through the cameras menu controls

The camera seems to be working with no apparent communication issues as yet. When you try to use the flash it even informs you that you need to insert the correct batteries to test. As I’m awaiting the CR123A batteries I won’t be able to test the flash functionality until they arrive.

No CR123A batteries installed? – You can’t use the flash

As I have stated the testing can only go so far until I have the missing items in my possession, for me that is the two missing batteries and a suitable lens. I’m currently in the process of procuring both. Physically there is nothing wrong with this camera after spending a good couple of hours going over it. I’m quite comfortable with it and believe it could be a lens communication error or just a failure to read the instructions properly by the previous owner. All I need now is that lens. I’ll let you know what occurs in the repair section.

Repair:

To be quite honest it’s not really been a repair, it’s been more of a “pre flight check” to collar a phrase, going through all of the cameras capabilities and ensuring that they are all functioning correctly. As the camera was listed as faulty, and the fault was not identified, I have had to do many hours of testing and Investigation to get to this point.

I’ve done a bit of shopping and managed to buy a nice little lens from the Southern hospice group. Always happy to help a charity and secured this at a good price of £15:50GBP, and that includes the postage, for a Sigma 28-200 f/3.8-5.6 Ø72 Zoom Lens Nikon F Mount. There looks like a bit of fungus on the outermost optic, however I can always clean this if it’s too bad. If not I’ll just leave as is for the moment and keep it vacuum bagged between uses, I can always do a separate post on cleaning up fungus in a lens at a later date. (I have done a basic fungus clean in the past : Canon EF lens 35-80mm)

My new – old test lens

I wasn’t looking at spending too much here, as I only wanted a lens to test a number of Nikon repairs I have upcoming as well as this S2 Pro. This lens will fit that role perfectly, and be added to my collection of other lenses that I have that allows me to test a range of different camera products. I have also purchased an “F” mount body cover for the camera to protect the unit when there isn’t a lens attached to it.

The two CR123A batteries have arrived and have been placed in the handle grip. The warning that was there before the batteries were installed (see picture above) has disappeared and when placed in manual mode the flash fires just perfectly, no issues here.

The Lens has arrived. Good point is that it fits fine and looks good, and all electrical contacts are good. Bad point is it has severe fungus throughout, and is just like looking through a fog.

I will do a separate post on cleaning this problem up in a later post. However I’m not overly worried at this point, I paid a very low price so it was to be expected, I’m not complaining to the seller who was a Hospice, they need the money and I can fix it so there really is no problem.

The excellent news is that the lens does exactly what it should. The camera indications are good, all working exactly as expected . However the pictures via the screen are extremely hazy due to the fungus infection on the lens. There are no black or purple casts on the pictures so I am quite happy that we haven’t inherited the dreaded CCD issue discussed earlier in this post.

If I use the lens wide open and pop the camera into auto mode I do get an “ERR33” code and that is a communication issue between the lens and the camera. As I have stated earlier in this post, you have to have the lens set at its lowest aperture and locked for the error code to go. Fortunately this lens allows you to lock the aperture and once this is done the camera takes over the exposure when it is working in automatic mode. So as I also stated earlier, it appears the seller was probably not aware of this requirement/issue.

Result:

We have a fantastic working camera, it does all it was produced to do, it has its little quirks and oddities, but being familiar with these cameras and at least having some knowledge and awareness of how they operate is always a wise thing. Read the instructions and don’t just throw them in the drawer until you eventually sell the camera on as a damaged item, when in fact you were just lacking the knowledge on how it operates in the first place. Instruction manuals are good, they serve a purpose. Knowledge is king.

The complete camera with lens

This camera cost me £8:00GBP. That is a superb price for a camera of this quality even though it is now 23 years old. It has a lot of life left in it, and I can’t wait to get it out and give it a real test.

It’s a little beauty – And the lens that needs attention

So in theory I’m confident and happy that this camera is now in a fully operational order, it’s needed a clean, it’s needed a lot of research to find out how it works, and I’ve also downloaded the operating instructions and repair pack should they be required.

It’s taking pictures and storing them. It’s just the lens at the moment isn’t performing at its best due to its fungus on the optics issue. I’m keeping the pictures stored on the card to compare them with the new pictures that will be taken once I have another lens to use.

Once the lens clean up is complete, if I ever get around to it, I will link it through this post.

Edit:

As 12/7/25 I have purchased a newer higher quality lens without any of the above issues to be able to get some instantaneous results, and as I have about seven other Nikon cameras requiring testing, some with sensor issues, it was wise to invest in a better quality lens. I have purchased a Nikon 28-100mm AF Zoom Nikkor Lens G AF-d, in perfect condition and the post regarding it can be found here: Nikon 28-100mm AF Zoom Nikkor Lens G AF-D

A newer – old lens, much superior quality

As previously stated I will add photos in this post once the new lens arrives, to show the difference from the fungus infected lens to a decent lens. The old lens is still a work in progress and I will post about it again as a separate post once the clean up is complete. It will probably be a job completed once the long winter nights are back in situ.

Below are comparison photos between the old lens with fungal issues and this new lens:

It’s just typical for me to manage to make another post from an issue that has arisen from fixing a different item. But isn’t that life? Continuous improvement is a factor we come across on an almost daily basis, and if you deal with old items as much as I do, then there is always something else that needs repairing, something that requires your attention and I just love that. The ability to improve or make something better, gives such a feeling of achievement and accomplishment, and total satisfaction. And that’s why I write this drivel. It’s for me, it’s what this blog was originally set up for. It’s my journal of what I do.

Many thanks for following this post. You know it is always very much 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

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.

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.

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.

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.

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.