so I bought this used last year and it played well for a while and then lost its reverb. I just got it repaired and the tech said that he needed to repalce some caps and other stuff and that there were a lot of problems even before the reverb stage. He said he fixed it though. I got it back and played it for an hour or so, sounded fine with reverb, and all of sudden loud continuous rustling/fuzzing came on. I only kept the volume on for a couple of seconds and when I cut it off the sound went away. I turned it back up and heard a reverb pop and then quickly turned off the amp. sounds like something burned out. anyone know whats going on? I'm definitely going to take it back to the tech...