B&K Reference 200.5 Help needed.

[Itsme]

Hello, I purchased a used B&K ref 200.5 and letting it run for a few hours with nothing hooked up it's really warm to the touch. I measured heatsinks at around 150 degrees but I have heard they do run really hot just idling. I tested DC offset on all 5 channels and channel 1 and 2 are between 6-7.mv's, the other 3 channels are around +-1mv. I'm going to adjust Bias and DC offset and wondering if Bias setting is 200ma across the fuse holders like most B&K mosfet amp's? I haven't been able to find a service manual for this unit yet. If anybody has one I would be greatful!
Thanks

 

[Andersonix]

I have this 'service manual' pdf but don't know more about them.

 

[Itsme]

Thank you Andersonix. Unfortunately that was mainly the schematics even though it says service manual? There is no other info on bias. I appreciate you though!

 

[GAMMA_CT]

Following.

Is the 200.5 a serviceable amp given the company is out of business and the legacy service company is as well?

 

[Itsme]

Absolutely, many guys out there that service older amps like me as a hobby. If your having channels cutting out on your 200.5 check you line in switches on the back of the amp. They get dirty after years and channels will cut out.