Hi, evey one I have a crown psa-2 self analgzing amplifier work great to the other day when I turned it on I noice that ch 2 was clipped. So i decided to open it and I started to trouble shoot it. The first thing I did was ckeck the ch.2 pnp output module and the ch.2 npn output module and they check out good. Now I have no other idea what it could be. Can any one please help me with my problem. Thanks