Just did a terrible thing. My Spec 4 had not been adjusted for a long time and it seemed to me that the right channel was slightly lower than the left. I adjusted the left Ok and when I did the right channel i touched the adjacent pin and it sparked. I checked the outputs and sure enough one of the 2sb554 transistors was blown. I replaced all the outputs with on semis from digikey as recommended here by the folks that know a great deal more than me. Once I turned it on the 50mv i was trying to adjust just ran away. Now I am an electrician by trade and I know enough electronics to make me dangerous. It seems to me that the device regulating this current is also blown. Visual inspection shows no burnt components. My next step is to replace all the transistors on that power board. Any suggestions will be greatly apreciated.