Perreaux SM2 & 2150B...

Hello out there. I have 2 PMF 1850 amps. One runs hot and the other runs cool. 1 must be right and the other not or neither is right ?? I think that there may be a chance that the BIOS needs to be adjusted but, I need the service manual for this to be done. I have had 1 of the amps - the one that runs hot - to 2 technicians to no avail. They need the manual. I emailed Perreaux but have not received a reply from them. Any Ideas?

PS: I love the sound of the PMF1850 into my JBL S3100 Horn speakers. I don't know how I would ever replace that sound without spending big bucks and a lot of listening.

Thanks

Bernard