check all of the fuses. You'll need to open it up and find the fuses that are installed on the driver board. I've had this issue with one of my B&K amps and it turned out I had a blown fuse on the driver board.
in the process, you may want to go to B&K's website and download their fuse spec sheet (I think it's in their FAQ section), and make sure all of the fuses are properly installed (ie noone replaced them with off-spec fuses)
Bdgregory (System | Threads | Answers | This Thread)
B&K is good about fixing thier product - pay according to getting the amp fixed...
Thymanst (Threads | Answers | This Thread)
Thanks for your response. I didn't check for responses earlier because I forgot what forum I asked for advice
on. I took it to a local repair shop and he opened it up
and resoddered some circuits and cleaned oxidation where neaded and now it works like a charm.
Willland (System | Threads | Answers | This Thread)