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Old 02-27-2021, 01:30 PM   #14
Join Date: Oct 2016
City & State: coahuila
My Country: mexico
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Posts: 52
Default Re: DSLR canon sl2 flash error 50

Originally Posted by CapLeaker View Post
I did check the error 50 thing and and everything I came across, they were changing a capacitor. Just Youtube "canon error 50". However that doesn't help your focus issue. Did you try a known good lens?
The F74966A is a system control processor (MCU). I would guess there should be another IC between it, the flash and AF... besides the MCU needs programming?
I own a t3i, and both lenses focus perfectly with the t3i. So I can rule out it being the lens. The MCU might need programming, so I guess that's out of the question. I can't seem to find what controls the flash switching transistor, I swept the whole board with a copper wire, and found no continuity to anything, so definitely it's one of the bga ic's. I have given up on the flash, I don't even plan on needing it, but the af was working and it is a must for photography.
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