Canon T90 shows the error messages HELP and EEE: Tracking down the last major problem

Andreas Thaler · Jan 16, 2025

I am now simply doing shameless self-promotion for my T90 contributions here on PHOTRIO

Perhaps further suggestions can be found to keep the T90 in a good mood

Search results for query: T90

www.photrio.com

Andreas Thaler · Jan 16, 2025

koraks said:
Awesome, thanks! I've found the T90 story; it's pretty prominent on your IG. Great work!

+ 1

Excellent!

And since then I also have an Insta account

Andreas Thaler · Jan 17, 2025

@joe_laroids

I had removed the shutter unit from a T90 during a dissection to investigate the sticky bumper.

If you need replacement screws or other parts, I can send them to you. I have plenty of defective T90s in stock here.

secrstamas · Feb 5, 2025

Andreas Thaler said:
@joe_laroids

I had removed the shutter unit from a T90 during a dissection to investigate the sticky bumper.

If you need replacement screws or other parts, I can send them to you. I have plenty of defective T90s in stock here.

Please continue this investigation and sharing your knowledge with us! I already learned so much more about the issue here than anywhere else. I really want to know how we could fix these beautiful old cameras. I just bought one for myself with "EEE", as I really love tinkering with old and "broken" stuff and I don't really mind if I fail. But if there is a chance to do a proper fix on them, that would be wonderful!

Andreas Thaler · Feb 5, 2025

@joe_laroids was ahead

I think it's the shutter magnets that aren't separating, cleaning them should help, like with the mirror magnet. But Joe also discovered broken plastic parts in the shutter.

With the T90, the path to the shutter is a long one, as it is wrapped in with multiple circuit boards. But with concentration, disassembly and assembly should be manageable.

These sources give the instructions. It's a lot of soldering work:

https://www.fou-du-canon-f-1.net/wp-content/uploads/2016/08/T90-Camera-Service-Repair-Guide-1.pdf

Post in thread 'Canon T90: recommendations and notes'
https://www.photrio.com/forum/threads/canon-t90-recommendations-and-notes.202884/post-2867633

https://www.suaudeau.eu/memo/manuels_rep/reflexes/canon/canon_t90_man.pdf

I would like to do that in the near future, but I am currently busy with Minolta AF.

secrstamas · Feb 12, 2025

Andreas Thaler said:
@joe_laroids was ahead

I think it's the shutter magnets that aren't separating, cleaning them should help, like with the mirror magnet. But Joe also discovered broken plastic parts in the shutter.

With the T90, the path to the shutter is a long one, as it is wrapped in with multiple circuit boards. But with concentration, disassembly and assembly should be manageable.

These sources give the instructions. It's a lot of soldering work:

https://www.fou-du-canon-f-1.net/wp-content/uploads/2016/08/T90-Camera-Service-Repair-Guide-1.pdf

Post in thread 'Canon T90: recommendations and notes'
https://www.photrio.com/forum/threads/canon-t90-recommendations-and-notes.202884/post-2867633

https://www.suaudeau.eu/memo/manuels_rep/reflexes/canon/canon_t90_man.pdf

I would like to do that in the near future, but I am currently busy with Minolta AF.

These are really helpful, thank you! I'm gonna let you guys know, whether I can or cannot fix the "EEE" error.

Andreas Thaler · Feb 12, 2025

secrstamas said:
These are really helpful, thank you! I'm gonna let you guys know, whether I can or cannot fix the "EEE" error.

Good luck!

Canon T90 shows the error messages HELP and EEE: Tracking down the last major problem

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