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I did replace the 100pf cap in the last tube in the series- heater line. I just did this because I had one. I put the tubes back in and tried the variac slowly keeping an eye on the voltage across the whole tube heater line. I reached 9 volts at about 90 volts on the power cord. This time I heard static out of the speaker. I also noticed if I tapped the chassis with a screwdriver the static stayed the same, but if I tapp any of the tubes besides the rect. the volume changed or the static changed. Looks like I need to clean some pins and sockets and try this again. Also in my area I can't pick up anything pretty much below 600kc. due to interference . This set also had the appropriate noise at this spot on the dial. no real stations came in though.
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