Sony AVD-K800P-DSP board problem
 

Hello: I have a Sony receiver/DVD changer AVD-K800P. THe problem is no sound
output in any mode , no video out in Dvd mode and no response from the dvd
player. Does not even open. After checking all voltages ,connections etc I
switched the dsp/cpu board from one I just happended to get in for repair.
The unit now works fine. Does anyone have any repair info on this board to
repair at component level. A new board is too expensive to justify the
repair. Markings on the board are 1-687-014-12 DMB 03 PWB. Maybe
someone has a schematic of this board.
Thanks in advance
Mike