Quote:
Originally Posted by cmjones01
Without seeing the fault close-up, that looks to me like there's something amiss in the black level clamping/colour burst department, so I'd start looking for oddities around the line timebase.
Chris
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I don't think so.
Black level clamping and anything to do with the color Burst gating act at horizontal or line rate and you would see vertical disturbances/lines, not horizontal ones.
This fault acts at a frequency not too far above the vertical rate, much slower, and it's about 250Hz, nowhere near the line rate, which is why the lines are horizontal. As I mentioned, this rate would be an unusual frequency to find as a signal inside a monitor, but could easily appear out the output of a DVD or VCR etc, like the signals you can see when you fast forward or shuttle a DVDs or vcr tape.