I bought TM18 head recently from American guy, the amp delivered last Tuesday, and everything looked fine until I plugged it to the cabinet, Fame GN212 by the way.
Overdrive channel sound had some strange overtone, like very high zzzzzz. The clean channel sounded pretty well.
Ok, today once i turned the lead channel with boost (or didn't manage to turn Boost on, I don't remember), I heard the very hight hissing. Then it stopped. No sound. I looked at the TSC LEDs. One was lit, the other was flashing. Looks like one power tube (EL84) died. Ok, then I turned the amp again, to check if I have overdrive in the RedBox output. Same result, clean is sounds, no overdrive but hiss, and the same hiss on the clean sound background. But. TSC LEDs was not lit this time.
So what I have now. Clean channel sounds both in Redbox and speaker outs. Overdrive channel - just hissing in both outputs. TSC LEDs are not lit.
Any suggestions?
P.S. No smell of smoke or something, tubes are lit (glow).