Photo equipment from the 1980s: Repair projects and recommendations

Andreas Thaler · Jun 4, 2025

Update #11

Canon

Canon T90: release magnet, EEE/HELP/bc, mirror shock absorbers and cover, front flex connector acting crazy/alternative?, victory, shutter magnets

Having suffered setbacks with my recent T90 projects, my pride was bruised 🤨 So I made another attempt and pulled the next T90 out of the repair box. Today I had to succeed! ⚔️ Both mirror shock absorbers are missing along with their mountings, the cover is no longer where it should be...

www.photrio.com

Canon T90: Service and repair using practical examples

I have gained enough experience in my recent projects to be able to offer a tutorial on standard service for the Canon T90 here on PHOTRIO. The work I recommend for every T90 (depending on the available equipment) is: cleaning the exterior, cleaning the contacts of the command wheel, cleaning...

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Technique/Know-how

Repair projects: Organizing information and considerations

Currently, I'm dealing with a Canon T90 that only closes its aperture to f/8. Reviewing the existing repair documentation suggests a mechanical problem. Various observations, test results, and thoughts on the cause and solution of the problem need to be noted down before I forget them or get...

www.photrio.com

Andreas Thaler · Jun 12, 2025

Update #12

Canon

Canon T90: Solution found for the stubborn front flex connector, service and repairs on the T90 are no longer a gamble

It's happened to me several times now that I've serviced a T90, only to find the work was in vain because of unsolvable contact problems in the front flex connector. The front flex connector is located on the front release side, where the red self-timer LED is located. Three flexible circuit...

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Canon T90: Final summary on DIY service and repair

I've spent several weeks working intensively on the Canon T90 and have written a few articles here. Sufficient to summarize what I have learned so far. Findings, observations, insights The main cause of the common problems are dirty magnets and contacts. Cleaning fixes this. The EEE/HELP...

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All information provided without guarantee and use at your own risk.

Andreas Thaler · Jun 16, 2025

Update #13

Getting started with DIY repairing electronic SLRs: a suggested route

Inspired by https://www.photrio.com/forum/threads/electronic-slrs-why-are-there-so-few-repair-reports-on-the-web.214243/ I would like to ask if there is any interest in a tutorial on the topic mentioned. It is about the basic approach to repairing and servicing an electronic SLR for which...

www.photrio.com

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All information provided without guarantee and use at your own risk.

Andreas Thaler · Jun 16, 2025

This series of posts is complete.

Thank you for your interest and good luck with your DIY repair work!