Quote:
Originally Posted by Bassnut
Well, I dont know if this helps, but I remember haveing banding problems like this on a cam a long time ago and it was due to a faulty power supply smoothing capacitor allowing 60hz ripple to occur. If your game, open the back of the cam and see if any of the larger caps (round al tubes) are bulging at the top. Thats a sure sign of a failed cap. Easy and cheap to replace if your a tech.....
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My 40D had vertical banding a few months ago. I did some calculations based on read out time etc and came up with about 100Hz. A full wave rectified AC signal (which is 50Hz) has rippling at 100Hz. This is a characteristic of FW rectification. I noticed this only when I was on the AC adapter for the Canon. For comparison, I went back to battery power and the banding was gone completely. An LC snubber cct was built and has reduced the effects but not eliminated them. The internal camera amplifier must be very prone to such interference.
Darrin...