Hello all,
I've got one of these Fosgate Audionics 4200 4-channel amps with 2 dead channels. Both of the dead channels have an open 27K, 2 Watt resistor. Replacing this resistor gets the channel to draw lots of current. I've called Rockford/Fosgate and they do not have a schematic available. Does anyone have a diagram that they would be willing to make a photocopy of? Any suggestions as to the problem?
Unfortunately, the layout of the PC board makes it difficult to get at, and the traces are unusually fragile. The board is double sided.
Regards, Tim Schwartz Bristol Electronics