Hi folks- all of a sudden, I have no color coming from the S-video port
on this player. Color is there using the composite video port. Have
looked at the back of the PCB in that area with a microscope, checked
continuity from pin 4 (all pins, actually) through the traces- several
resistors and one 100 nF cap appear to be all good.

Any ideas? I'd love to see a schematic of this unit.

Paul Nelson W5GNF