Perreaux P250 Problem

Thank You For Your Help!
I have know idea why the one channel went .It still play's but with distortion , then bleads into the other channel after awhile .
Had it hooked up direct to a Cal. Audio Labs CD player with volume control built into the player . Maybe that caused the problem?
Had the amp into 2 service depot's both said it was a mosfet problem and had to wait for part's .Waited for 6 month's then picked up the amp then took it into a second service depot waited another 6 months it's home now just in storage .

Got the Amp fixxed buy your recomendation Jvia.Here is the E-Mail regarding the problem from Mike Zuccaro .
chuck:
Got the Perreaux amp fixed. Spent a lot of time on this, found a
manufacturing problem- one of the driver xisitors was arcing to the heat sink
due to a tiny burr on the transistor. Very lucky it did not do a lot of
damage. I did not get a schematic.

I spend about 6 hours on this, (approx. $200 labor) + I got a bill for $35
from your shipper for customs duty. I'm going to research the shipping cost
today. Figure around $300 US total..
Best
Mike Z.