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Finally got some progress on this set. I injected a IF signal on the 4th IF tube and I got a decent test pattern. Backed up to the 3rd IF tube and got the half picture. So the problem is before the 4th IF stage. I checked the resistors in the whole IF stage and all the 470 ohms were way out of tolerance, some 200 ohms or more. Replaced them, but still no change.
I also injected a video signal at the video amp and got a decent pic.
The IF section got lots of "dogbone" capacitors. Should I be looking at those, or do I have to search before the IF stage?
Also my voltages are running 30 volts high on the IF stages.
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