I hooked the spec 2 up a while back and let it play for around 10 minutes, then all the sudden I hear a small pop and smell something get hot, then I noticed the right meter was almost on 500 and the protection light was on. I had a yamaha cx-600/u pre-amp hooked up to it and it was playing just fine on both channels until that happened. Anyone have any suggestion what to test first? I want to do a temp fix until I get all the caps and stuff replaced. If possible I'd like to get it going without needing a oscilloscope, audio analyzer or 4/8 ohm dummy loads.