Do-it-yourself repairs: Have fun and set realistic goals

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Andreas Thaler

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If a camera doesn't work as it should, the question is what is best to do.

If it is a current model and there is still a warranty claim, the manufacturer will take care of the repair and you don't have to worry about anything else.

Otherwise you pay for the repair, provided the camera is still within the service period in which the device is looked after by the manufacturer.

After that you have to organize repairs yourself. Either you find a workshop for it or you try it yourself.


Factory standard specification

You should be aware that only the manufacturer has the ability to repair a camera according to its factory standard - and thus optimally.

The manufacturer has the necessary know-how, original spare parts and the necessary facilities and equipment in its service facilities.


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Even a well-equipped hobby workshop cannot achieve the manufacturer's standard when it comes to repairs.


Workshops and do-it-yourself (DIY) can therefore usually only carry out repairs to a limited extent, if at all.

Even a well-equipped DIY workshop is of no help here.


Limit for DIY at the end of the 1980s

In my experience, the limit for DIY camera repairs is around the end of the 1980s.

Later models are already equipped with electronics that are too highly integrated and there is nothing left to tinker with in the true sense of the word.

The camera housings are also no longer easy to open, as they may be glued or locked instead of screwed.


Highly integrated and artfully installed electronics

Recently, we had an interesting discussion in the German Netzwerk Fotografie, on the occasion of the repair of a Nikon F3, about whether an error in the electronics should be investigated further.

Circuit diagrams are available, so it should be possible to identify the cause of the problem and perhaps even fix the error.

There is a limitation here that you often don't have in other DIY repair projects - in this extreme form:

The installation of the electronics in the camera housing.


IMG_8236.jpeg


Less space than in a submarine: artfully installed electronics in the Nikon F3 from 1980.


As cameras are even more cramped than in a submarine and free space is scarce, the electronics are intricately integrated into the camera housing.

The circuit surrounds components on a flexible board, is connected via cables that run across the housing, and is artfully woven into the case, sometimes on several levels.

In order to accommodate all of the camera's functions, there are usually only integrated circuits (ICs) that are soldered onto the circuit board as small black blocks. These ICs are usually not documented either, as they are a manufacturer's secret.

So the cards are bad for the do-it-yourselfer, even if he has more than one screwdriver 😉


IMG_8237.jpeg


Masterpiece of Japanese circuit board winding art: Canon's T90 from 1986. Here the flexible conductor tracks run in layers on top of each other, which makes access to the camera's built-in components almost impossible.


Point of no return

Attempts to repair often have to be aborted because troubleshooting sometimes involves dismantling the camera, which can cause further problems.

For example, the position of gears in a transmission no longer matches (electronic cameras also cannot function without mechanics). Or factory settings are lost that can no longer be reproduced. Parts can also be damaged or can no longer be put together, etc.

Otherwise you have passed the point of no return. The camera is then sometimes a total write-off and is only suitable as a spare parts store.


Realistic goals to keep DIY fun

When doing DIY, you should therefore set realistic goals for repair attempts so that you don't lose the fun.

This can mean, for example
  • not trying to repair a camera completely, but rather repairing parts of it,
  • investing your time in more promising repair projects and thus avoiding disappointments,
  • specializing in care and maintenance, and thus successfully carrying out simpler repairs yourself,
  • dissecting a camera without putting it back together afterwards in order to get to know its inner workings and thus also obtain spare parts for future repair projects,
  • not trying to solve everything on your own, but getting advice on repairs here in the forum, everyone is an expert in their field.

Nevertheless, it is often amazing what you can do yourself in a repair case.

What you need to get started is not much and certainly not expensive:

 

vandergus

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Limit for DIY at the end of the 1980s

In my experience, the limit for DIY camera repairs is around the end of the 1980s.

Later models are already equipped with electronics that are too highly integrated and there is nothing left to tinker with in the true sense of the word.

The camera housings are also no longer easy to open, as they may be glued or locked instead of screwed.
Hard disagree. Troubleshooting can be difficult because of the "black box" nature of some of the electronics but there is still quite a lot that can be done. You may not be able to pin point the component that has failed but swapping electronic modules is still very doable and the camera is often specifically designed for such servicing. In some ways, later electronic cameras are even easier to work on than cameras that were designed in the transitional era. They learned a lot about flex cable routing and how to bundle more camera functions into fewer modules in order to make the initial assembly more efficient. From my own experience, I can say that disassembling and reassembling a Pentax MZ-3 is way easier than a Pentax LX, for these exact reasons.

Additionally, even with electronic cameras, a lot of the failures are in the mechanical components, which are reasonably easy to troubleshoot. Parts can sometimes be reconditioned and sometimes replaced with newly fabricated parts.

Are there limitations? Sure. But there is also a ton of doable work. It's way too harsh to right off this entire generation of cameras as lost causes.
 

BrianShaw

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You should be aware that only the manufacturer has the ability to repair a camera according to its factory standard - and thus optimally.

The manufacturer has the necessary know-how, original spare parts and the necessary facilities and equipment in its service facilities.
Not necessarily true.. without additional caveats.
 
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Andreas Thaler

Andreas Thaler

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Are there limitations? Sure. But there is also a ton of doable work. It's way too harsh to right off this entire generation of cameras as lost causes.

I don't know of any repair reports for Nikon F6, Minolta Dynax or Canon EOS-1V.

If you have sources, I'm very interested.
 
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Andreas Thaler

Andreas Thaler

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Not necessarily true.. without additional caveats.

The manufacturer knows its equipment best, with first-hand know-how. A workshop cannot keep up with that, not even because of the equipment. See, for example, the Nikon F4, AF itself cannot be adjusted.
 

vandergus

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I don't know of any repair reports for Nikon F6, Minolta Dynax or Canon EOS-1V.

If you have sources, I'm very interested.

This doesn't support your initial statement. Saying the three most advanced film SLR's ever produced are hard to work on is vastly different than saying every camera made after 1990 is hard to work on. Your initial generalization was waaay too broad.

The likelihood of success should be evaluated on a case by case basis. Some of the faults in these cameras are known and the repair is understood. Others are nebulous and result in a wild goose chase. And in many cases, the only way to repair them is DIY because camera shops won't touch them. As is the case with my beloved Pentax MZ cameras.
 
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Andreas Thaler

Andreas Thaler

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This doesn't support your initial statement. Saying the three most advanced film SLR's ever produced are hard to work on is vastly different than saying every camera made after 1990 is hard to work on. Your initial generalization was waaay too broad.

The likelihood of success should be evaluated on a case by case basis. Some of the faults in these cameras are known and the repair is understood. Others are nebulous and result in a wild goose chase. And in many cases, the only way to repair them is DIY because camera shops won't touch them. As is the case with my beloved Pentax MZ cameras.

I would like to see repair reports for the cameras from 1990 onwards. Then you will have covered the ten years that you are complaining about to me.

In particular, repairs to the electronics, adjustment of the system after replacing modules, AF settings and the procedure for doing so.

As I have already said - and this is consistent with my research on the web - the Nikon F4 from 1988 is more or less over, I probably wrote most of the posts about it.

I don't know anything about the F5 from 1995, nor about EOS.

I would be grateful for any tips, and would be happy to expand my area of activity 😉
 

BrianShaw

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The manufacturer knows its equipment best, with first-hand know-how. A workshop cannot keep up with that, not even because of the equipment. See, for example, the Nikon F4, AF itself cannot be adjusted.

Perhaps I don't correctly understand what you mean by "workshop". Do you include professional independent camera reapir shops in that category? If so, there have been, and still are, professional independent repair shops who can match maunufactuer factory repair knowledge and capabilities. Most were trained by the manufacturers, have repair documentation, and parts access not generally available (although some, thankfully, has certainly been disseminated on the WWW in the past decade).

And it is possible, I will gladly admit, that my experience may be different than yours due to my proximity to Hollywood. Back in the heyday of film there were a lot more independent shops than there are today, but some have nonetheless persisted and are servicing/repairing both vintage and modern cameras - mechanical and electronic. There are limits, as you well know, and it's often a function "economic value" and parts no longer in the supply chain rather than any lack of knowledge or talent.

But if all you are talking about here are hobbyiest DIY workshops...
 
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Andreas Thaler

Andreas Thaler

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But if all you are talking about here are hobbyiest DIY workshops...

Forgive the German speaker who admires the subtleties and differentiation power of the English language variants, but is not proficient in them 🙃

By „workshop“ I mean the independent repair shops, not the manufacturer's and not my DIY in the kitchen.
 

vandergus

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I would like to see repair reports for the cameras from 1990 onwards. Then you will have covered the ten years that you are complaining about to me.

In particular, repairs to the electronics, adjustment of the system after replacing modules, AF settings and the procedure for doing so.
Again, you are cherry picking the most impossible aspects of repairing electronic cameras. I never said you could troubleshoot individual electronic components. I said you can do a lot of repair work without having to do any of that. You don't need factory tools in order to make meaningful repairs. Did you calibrate the AF sensors in your F4 when you repaired the aperture mechanism?

I'm not going to go on an internet scavenger hunt for every repair guide made on a camera after 1990. But here are two that I've made myself.


 
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Andreas Thaler

Andreas Thaler

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Again, you are cherry picking the most impossible aspects of repairing electronic cameras. I never said you could troubleshoot individual electronic components. I said you can do a lot of repair work without having to do any of that. You don't need factory tools in order to make meaningful repairs. Did you calibrate the AF sensors in your F4 when you repaired the aperture mechanism?

I'm not going to go on an internet scavenger hunt for every repair guide made on a camera after 1990. But here are two that I've made myself.



If my camera has an electronic problem, it is no use to me if I can repair its mechanics, as you obviously managed to do with your Pentax.

Either I try to find and fix the fault or I replace the entire electronics, which only works in theory at best.

I did not have to adjust the AF on my F4, as its settings are stored in an EEPROM on the front panel circuit board with the factory settings. If I had installed a different front panel, only Nikon would have been able to do the adjustment - 20 years ago.

For my part, I am now ending this discussion and sticking to this: DIY is not a good option for an electronic camera after 1989.

If you still manage to make repairs, I congratulate you of course 🙂
 

BrianShaw

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For my part, I am now ending this discussion and sticking to this: DIY is not a good option for an electronic camera after 1989.

(Completing the sentence with the implied caveat)
… with some types of electronic failures.
 
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Andreas Thaler

Andreas Thaler

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(Completing the sentence with the implied caveat)
… with some types of electronic failures.

No, I deliberately formulated my statement like that.

The newer cameras tend to have casings made largely of plastic that are no longer screwed together, but locked. This means complications when opening and a further risk of damaging something.

Because there are links to iFixit above - yes, I know the tools there to open newer electronic devices and use them for my veterans.

But here there are also glued casings like smartphones and the cameras from the 90s were still held together mechanically.

But now bye.
 

BrianShaw

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Granted, there are some products built with limited “design for maintainability” characteristics…
 
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Nicholas Lindan

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Another problem with post 1980's technology is the lack of access to the servicing and calibration software.

My personal run-in with this problem was attempting to re-align the AF on a Nikon 35ti P&S. Like any rangefinder, things occasionally go out of kilter and need to be brought back in line. But on P&S's this adjustment is done by correlating the reading from the AF sensor with the number of focus motor steps to move the lens from it's 'home' stored position to the infinity focus position. What should be a 30 second self calibration procedure becomes a nigh impossibility without the service software.

Cameras that once had arrays of trimpots to set various gains, offsets and time periods now store all that information in the microprocessor's non-volatile memory and so circuit calibration is now inaccessible.

The service software and documentation probably exists somewhere. Or, maybe it doesn't and the last copy went to its grave on a hard disk that met its end in an 'electronics recycling facility' in Nigeria.
 

BrianShaw

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I often would like to see the design and manufacturing specs as well as test/reliability data, which I think may also be on that hard disk in Nigeria. :smile:
 
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