1972 Fender Champ project

[Gunny]

can you clip a voltmeter across the 6V6 cathode resistor and watch the voltage that develops? Note the voltage once it warms up until the symptom appears. Then report back here and we'll see if that gives a clue.

[ron vogel]

Fixed...and I found it just about 2 months ago! Input jack wire had a bad solder joint. Was playing with a mid pot on the amp when I found it.