Just started having some problems with my Boss Katana amp, here's what happens.....


* I switch the power switch on.

* The Led indicators on the control panel light briefly, and then go out.

* I get no audio output from the amp.

* I try switching the power switch of and then on.

* Finally after switching the power switch off and then on again several times in a row, the amp powers-up normally and it produces sound.

This problem has happened twice in a row, the first time it happened the amp emitted a loud screeching noise, then powered-up normally but the sound was really bad with horrible digital distortion.....does this sound familiar to anyone?