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I spent resterday recapping and checking resistors. There were very few resistors far enough out to change. A couple looked a bit overheted and I replaced with like-sized modern film ones (which of course have a much higher watt rating then equal-sized old ones.)
I first did audio, then RF and 1st and 2nd IF, then last IF and detector, then vertical, then video, then horizontal and finally sync. I checked operation after each step. Checks were by oscilloscope.
All went well until the very last step, which I did last because it looked quite unlike any schematic. It still worked but not as well as before. I will investigate today.
Then I cheated the HF interlock and tried it with a 5BP4.
It looked good except for a little bit of horizonal bending. I will work on that.
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