crown XTI2000 ch.1 clip error and led -2

I have a crown XTi 2000 with problems.
Ch1. will clip but the supply will stay at 30 V. and will not switch to 110V. loaded on 8 ohm.
first problem is resolved (cracked sound on Ch.2) repaired 10pf condenser nearly xtal by DSP
-20 dB led will not blink up buth immediatly clip led ( channel 2 have no problem)
do you have any suggestion.
Thanks a lot.