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Monthly Archives: December 2016
Glued screws – when the serviceman get’s angry
I have got a Sigma 300 mm F2,8 lens from a customer, which has some dirt in the inside. A lens element was dirty or some fungus on the surface. (As a supplementary information I was told, that on the … Continue reading
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
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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
4 Comments
DIGITAL CANON repair blog 