So I tried that on the preamp tubes and found nothing, but did the same to the power tubes and found that the second from the left seemed to be the culprit. I've read that you can run the amp at 50w by removing two power tubes and a rectifier tube and plugging the 8ohm cab into the 4ohm output...
I just picked up a used Dual Rectifier and cab and was hoping you guys could tell me what this noise is. Here's what a I know: the amp will make this noise on and off at random intervals, generally starting a minute or so after turning it on. It does this with or without the guitar plugged in...
