Hello, I have 2 Kustom heads that need a bit of work done. They are a K 200-1 and a metal slant face K 150-2. The K 200-1 when turned on does do the soft pop to the speakers that my working Kustoms do but no sound other than a slight hiss.      The K 150-2 blows fuses when turned on. Both of these amps have the original cords without ground pins. I have never really worked on large amps such as these but I build pedals regularly and I know how to use a multimeter. Any help I could get would be appreciated.  Thanks, Will