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It's being fed right into the video amp's grid. I would suspect that the piddling signal from the dvd player just isn't enough to drive a decent picture to the single video amp tube to the crt.
OTOH, the IF strip could be swamping the dvd signal. Should I pull the final video IF tube to drop this potential interference? Also, does the dual diode do anything for a signal added to the video output grid as I am doing, ie do I get dc resto?
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