Discussion about the Korg PolySix synthesizer

yeah, I would say that the problems are on the same board.  they
almost always are.  First off you can track down the schematics for
the board, but they really aren't that necessary (if even useful)
unless you have parts missing, which I doubt you have.

ANyhow....

take the board out that has the battery on it... gather some X-acto
knives (regular razor blades will work as well) and some fine hook-up
wire or something similar.  Also, many times a magnifying glass is
helpful.

examine the board, everytime you see a chipped away or corroded trace
(the wire thingies), you will need to scrape all the bad away; look
for blackened traces and the such.  Most likely you will need to
'replace' it with some of the hookup wire.  THis can be done by
soldering it exactly over the broken trace (make sure you scrape the
coating off until you get enough good trace to solder to) or by
following the trace itself to both ends and solder the wire to the
components that it connects.

This can take a very long time, or you can find one or two that are
bad, replace them and bingo, you got the Motts.

My board had the battery replaced (with an OE battery) and traces
repaired before I even bought it.  I replaced the battery again (using
oldcrows directions),  and then fixed yet *more* traces.  The synth
worked fine itself, but those traces on the "battery board" were
keeping the majority of my "patch memory" from working.

-ben