09-04-2024, 12:16 PM
Just another update. Because of several tubes that were DOA, I started to check the power transformer windings for the correct ohm readings. When I checked the HV secondary, my VTVM showed the hallmark reading of a leaky capacitor charging. This should not happen as the HV secondary is isolated from the filter circuit. I did some poking around the rectifier socket and found a burn mark. When I poked at the burn, my probe went right through the phenolic right between the plate connections for the 80 rectifier. I suspect the burn allowed a path to the filament connection, which would allow a connection to the filter circuit. Anyhow, since the socket has to be replaced, it seems better to repl