My amp blows fuses within 2 minutes of being on. Before it'd turn on, but it was really quiet with no bottom end. It was making really weird sounds on its own for awhile and my palm mutes were all woofy. Its an ENGL Savage 120 if that matters.
The basic idea I'm getting from it is that you remove the tubes, see if it still blows a fuse, and then add the tubes one at a time until the fuse goes, thus telling you where the problem is. Take every precaution when working with amps and electrical crap, make sure it's powered off and preferably unplugged, don't work on it unless you're really comfortable, etc.
