). for us techs (i'm self taught) they are an easy amp to fix . for someone who just came out of mama's belly...take it to a service guru. repairs can be cheap or expensive depending on the animal. there is also a certain way to dis-assemble an svt in a certain order and you don't want to drop the amp chassis on your foot cause you spilled your coffee next to it or even worse, drop it on your "fish out of water" lp ! with the tubes out of the amp you can go thru it with a digital volt meter looking for suspected probems initially checking all the components for their certain spec values, but the best way is to use a dvm in concert with an ocilliscope (to see whats going on ) with a heat sink and signal generator creating a waveform. (you're making me want to open up my svts to vacuum out all the dust in there ! ) large amounts of dust can cause carbon tracking or arcing !they do make great room heaters when you're staying upstairs at the club you're playin' at in a room with beds with only sheets and no blankets, broken windows with no curtains, and the band is huddled around the toaster oven waiting for that toasted peanut butter and jam sandwich in the middle of a sub-zero winter setting...oops, am i bringing back some memories ???
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