I'm still tending to think (hope) that it's a symptom of bad/weak tubes, all I can tell is that all the general voltages in the RF/IF area are there, but 50-55 volts higher than shown in the schematic.
If there was an open coil, there would be a missing plate bias, and all are there.
YES, the power supply has been changed due to the burn out, but I doubt that is the problem here.
300acv tap is being used, rather than 340v original, 1kv 1a silicon diodes rather than 5U4GB, first resistor in voltage divider changed from 500 to 600 ohms.
Amp section working flawlessly.
Even if I lower the main input to 70-75v, it makes no difference, Amp still happy, raidio quiet.
USPS says the ordered ones will be here in 2 days, will just have to keep fingers crossed.
Shame that I don't have easy access to a tester here,
