So basically I was doing a direct slave out on my mesa dual rec head into a DI box downstairs.. and my roommate was fiddling with the back of the amp seeing how the outputs were working and shit. Basically we got a small hum at first.. and not the sound we were looking for that was coming through the speakers.. I turned the volume up slowly.. and saw a white flash in the amp.. and it powered down completely. The fuse is blown.. and I'm about to go find one to try and replace it. I just want to know.. what do you guys think it is? You think the transformer is blown? or will that cause a problem? And if so.. how expensive is it to replace a fried transformer? I'm so pissed/confused/scared at the moment. I hope the head isn't fucked.