Tube Amp Archive

Your post about the filter caps was right on the money. I had a Gibson Vanguard on the bench just after the DRRI that was oscillating in only one channel and I chased it for the longest time until a few things pointed me to the caps - desperation being one of them. I strapped a known good cap across...

Here are some things to try: First: clean all the push on connectors between the control panel pcb and the amp board, check these connectors for cold solder joints and for "crud" or contamination between pins. Reverse the input and output of the reverb pan and see what that does for you. I have seen...