Monthly Archives: November 2020

USM refurbishing

Posted on 2020. November 29. by canonrepair

Cleaning of the optical encoder ring helps only the focus hunting cases.When the problem is with the usm ring, I refurbish them with degreasing, polishing both rings to get back the plane, shiny surfaces, then cleaning again, after which mounting … Continue reading →

Posted in General topics | 49 Comments

Eastern Egg in a 17-85 IS

Posted on 2020. November 7. by canonrepair

I had to replace the aperture cable – and I found the former one too, which the other service did not removed before mounting the new one. They dont like to disolder?!

Posted in General topics | Tagged | 2 Comments