A used vox ac4tv I've recently acquired has stopped making sound other than a soft static and hum. I replaced a blown fuse on the board and the amp resumed working, but upon being driven hard the amp died again. I've check the speaker connection, replaced the other fuses, changed out both tubes and still no sound. Any ideas what's wrong?
Just to be sure, you replaced the fuses with an exact match? Same tolerance, same blowing speed?
Replaced with an exact match.