The buzz is still there. I replaced the rectifier and it seemed OK at first. However, after a while the buzz came back. It seemed to be responsive to the Vibratto volume pot but over time the buzz became constant. It may be temperature related, because I can let the amp sit for a while turn it on and it'll be OK for a while then the buzz shows up. :mad: The buzz volume is constant, either volume control has no effect on it. Is it a filter cap breaking over? I'm going to see if I can find the right kind of caps today. Could a faulty preamp tube (7025) do it?