Discussion about the Korg PolySix synthesizer

Hi everyone,

I just joined this forum because I have a Polysix that is about an inch away
from working perfectly.
I love the sound of this synth and I would love to have it working
perfectly.
I was hoping someone on here might be familiar with the problems I'm having:

1. The effects work (kick in and change when I operate the MODE switch), but
the speed/intensity knob has no effect. I tested the pot and it is fine. I
know the 368 board is the effects board, but I have no idea where to find
the components that are to do with the speed control... Maybe It's simply a
cable problem?

2. The MG works, but I cannot alter the frequency. When I turn up the level
it just slightly opens the filter, or increases the volume or increases the
pitch, depending what I have it switched to modulate, but it does not sweep.
The delay works fine.

I have a feeling that these problems are related in some way, since they
both involve a modulating frequency control...

Anyways, thanks in advance to anyone who might be able to help.

-Daniel