Quote:
Originally Posted by Electronic M
Could the detector diode be plugged in backwards?
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That was the first thing I thought of too
No, switching it screws it up even more. I discovered that this problem has existed all along. When I injected a signal directly in the IF, I had the contrast up 100%. If I back it off a little, I get a reversed test pattern too. The service specifically mentions an inverted image in the troubleshooting section and indicates it's a problem in the video amp.