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On CTC-38's the IF stages are transistorized. I have seen a power supply problem knock out the 80 volt supply to the transistors and thus cause no video or audio. The last time I fixed the problem there was a bad wire wound resistor in the power supply near the filter caps.
On that tube socket repair I have done like Adam said just used a regular chassis mount socket. I busted up the old socket and used a desoldering wick to remove the old contacts. Then I soldered long bare wire to each pin on the new socket, put the wires through the holes, solder at the board then run the bare wire back the PC board trace to the next connection point and solder there too.
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