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 the inside of the eyepiece,
- removing, disassembling, and cleaning the Copal S shutter (sticky damper); advantages and disadvantages shortcut
- adjusting the curtain travel times and the 1/4000 second, as well as the exposure metering (camera tester required),
- avoiding the infamous EEE error during assembly,
- removing and cleaning the battery compartment of battery electrolyte/resolving battery contact problems,
- tips on soldering and special features during disassembly/assembly,
- cleaning the release magnet (infamous blinking arrow on the LCD) and the shutter magnets (EEE error),
- replacing the memory battery,
- checking the DC/DC converter,
- troubleshooting/available technical instructions,
- other
Information about this can be found in my current posts about the T90 but perhaps there is a need for a detailed step-by-step tutorial.
As always:
All information provided without guarantee and use at your own risk