i have the first edition Peavey XXX and its not working correctly. One day i go to hook up my XXX. i was just the head sitting on the cabinet plugged in to the wall.(Big mistake) I plugged it in to the cabinet as well as my guitar and let the tubes warm up as per usual. once i start to shred my guitar I realize I can't get any sound. i play around with the head and determine there's something wrong with it and hit the power switch. As i switch the power to the off position i hear the guitar fading out. hmmmmmm so i do this once again, same thing. does this tell me the output transformer has blown? if this is the case, what are some amplifiers that use an OT that is compatible with my first edition Peavey XXX that i can salvage parts from?