[Kekoa]

Ron, you may already know this, but just in case....there is an error in the  Riders schematic.  The values on the C51 electrolytic are  wrong in the parts list, and their locations are drawn wrong on the schematic.  Also, they are wrong on the bottom view of the chassis. I ended up buying the SAMs schematic, just to be sure.

It is actually:

C51A...20uF
C51B...10uF
C51C...10uf

C51B and C51C are in parallel.

The Riders bottom view of the chassis shows A & C connected at the positive side.  This is wrong.  It is actually B & C connected on the positive side.
The SAMs schematic shows the location of C51B and C  swapped with the location of C51A (doesn't really matter since B & C are in parallel).



Now that I've totally confused you.....the SAMs schematic is correct, and matched my 53-960 exactly.