frist of all i want to say thanks to you people that put on and maintain these forums! you people really do a wonderfull job. i am glad to see some body keeps these old schematics. i belong to several forums and never found one that i did not find help at the transistior that is blown is on the frist board print on that link i did like you said and did some creative guess work and came up with mps-6534 the people that brought me the amp said that thought it was a under-power or low voltage this is where i have problems this transistior comes off a +83 volt with a i do belive a 133 ohm resistior on the base side?