i have an early V4 with a problem....when i turn the bass pot back and forth, there's a loud thumping, which corresponds to a pulsing blue glow in the power tubes. all tubes are new, and the amp seems to running fine otherwise. i've spray cleaned the bass pot, and even disassembled it and lightly steel-wooled the guts.....no change in the thump.
any ideas? i'm going to swap in a substitute pot...but if there's something i'm overlooking, i'd appreciate any advice. here's the schematic: http://www.freeinfosociety.com/elect...view.php?id=46
thanks
any ideas? i'm going to swap in a substitute pot...but if there's something i'm overlooking, i'd appreciate any advice. here's the schematic: http://www.freeinfosociety.com/elect...view.php?id=46
thanks
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