Commando wrote:
Thanks Steve....measuring 12v on pin 3 of EL84. But 21v on pin 8 of 6v6. I assume this is not good. Do I need to replace the 220 cap or the 250 resistor for the 6v6?
21V on the 6V6 is fine. We run the 6V6 in a Tweed at 22 at 400V. Your cathode voltages look OK.
Regarding blue glow in tubes, check this out:
Blue Glow in TubesIf the EL84 sound fine, it sounds like a component around the 6V6 so the 220 uf bypass cap could be the cuplrit. To test, use anything 25 uf & up with a voltage of 50 or more. Or you can temporarily remove it and listen again.
It can also be the solder joints so retouch them first.