...??? The hum is a tube that has gone weak or a volume switch that may be going out! Try a TV repair shop in your area, and call first so they can tell you if they are familiar with the old
tv's a major cause of distortion. But a steady , low freq hum is your transformer and i have a stethoscope, not for that purpose:). Then you don't have to search. But they ain't cheap, the
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