Category Archives: Canon camera

How to measure CMOS position with a dial gauge


Case You want to replace the shutter in a newer Canon camera, you will have to take out at first the sensor. And the sensor is positioned regarding to the flange NOT with the help of some adjustment washers, but … Continue reading

Posted in Canon camera, DIY, tools | 10 Comments

Canon 5d MkII – error code 20 : shutter…


… or not the shutter?!? One of my customers has a 5d MkII. Time to time the camera stopped working with error code 30 after shooting. This is a general error code: “ Err 30Description: A malfunction with the shutter … Continue reading

Posted in 5d2, Canon camera, shutter | 2 Comments

Canon 7d – ERR20 – again and again


This 7d has been repaired a few months ago with an ERR20 error code after each shooting. ERR20 could mean many different problems, here is he internal ode: Interesting is, that, the internal error 215 is Mirror position problem, as … Continue reading

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7d flash overexposure – RTFM, RTFM, and again: RTFM


I repaired a 7d for somebody (a faulty rotary switch, and a general internal cleaning, with glueing the flying screw, which was of course on the side of the shutter motor), and after assembling it I checked the general functions … Continue reading

Posted in 40d, 7d, Canon camera, flash/strobe | Leave a comment

Melted canon 6d – or any DSLR exposed to sun


A customer has sent me an email with a strange problem: he has seen something blurred in the viewfinder of a 6d, after which he turned off the lens, and a burned smell came out. He has 2 similar 6d … Continue reading

Posted in 6d, Canon camera, melted | 6 Comments

Canon 7d – ERR20


After exposure, ERR20 – shooting is not possible message. This means some mechanical failure. Official Canon advice: “Err 20 Description: A malfunction with the mechanical mechanism has been detected. Resolution: Turn the power off, then remove and re-install the battery. … Continue reading

Posted in 7d, Canon camera | 2 Comments

Canon 40d motor revival in the body of a 7d


This is a story about my own 7d, which has been flooded with water, before I have purchased it “as it is”, practically not working. I repaired it in a few hours -worked well after.After a certain time stopped working, … Continue reading

Posted in 7d, Canon camera | Leave a comment