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I have a BK 1077B and injected video on the grid of the Video amp. Worked well. Then used the IF mode to inject a signal from each of the 4 IF stages. Same problem.
I'm suspecting the Video Detector circuits. It is a 6AL5. Is there anyway to use the 1077B to check this section out? The manual and Kiver's book seem to skip over this section of circuitry. BTW I substituted the tube with a another one that checked good. No joy.
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