hey do you guys know places that repair guitar amps? One day while I was jammin in my room, there was a loud exploding kind of sound came from the amp. Got it repaired immediately from an electrical hardware shop. They managed to fix it but only lasted for 2 weeks before the same thing happen. I'm using a Marshall JCM 2000 - DSL 401 tube amp. Anyone knows what maybe the cause of the problem and places where I can get them fixed?