My apologies again; I finally figured out that the A and D sockets are wired differently. (I was not present when the manual was written, and I don't have a Kaiju in my lab.) The circuit diagram shows 5670 pin numbers for the A socket, not the D socket. The relevant socket terminal is D8 (not D2). I feel really bad about this.
Here is my earlier post, edited to say what I intended to say:
"D8 is wired to kreg on the A side," - so attach one lead of your ohmmeter to D8, and probe the resistance from there to kreg (A) - should be near zero, if not then the wire between them is faulty or badly soldered or connected to the wrong place....
" which goes to the trimmer R4," Hard to get at the trimmer leads, so move on to:
" then to the 4990 ohm resistor R3" Leaving the first lead attached to D8 and probe resistor R3 (4990 ohms) on the A side - both leads. One of them should show the trimmer setting (between zero and 10K depending on the trimmer setting). The other should be close to 4990 ohms greater than the first resistor lead. Too complicated to do here, if this is the problem post results and we can dive onto it.
" and finally to the -reg on the board," so move the probe to -reg (A) (keeping the reference at D8). Should be the larger of the above two measurements. If not, the solder at one end of R3 (A) is bad.
" and then is wired to ground" Move the probe to a nearby ground terminal. If it's not the same, then the wire from -reg to ground is at fault, or badly soldered.
