Discussion about the Korg PolySix synthesizer

While continuing to investigate my malfunctioning Polysix, I inspected the leftmost control board, the one which has a blue connector soldered to the power supply.

If you follow that trace, you may find a break in the line somewhere as I did. A break was also found in the same board of the spare Polysix (now being parted), and also from the Polysix of a member on French forum anafrog.

I repaired both boards.

Yash

Just checked my PolySix. I see what appears to be an intentional cut on that trace, right next to the letters "J2" or "Bend". Are you sure that's not supposed to be there?

Bob

Looks like the cut was to separate some circuitry from +5V on the control board. Then on my unit a separate blue wire was run from the power supply to bring +5V to that circuitry. This may have been done for noise reasons.

Bob