Are you refering to the trimpot on the computer board ?
I don't know very much about it but on my Trident it did the same
when I set it to a cetrain position. This is how it was when I first
got it - powered it up and all banks/presets lite up. By ritating the
trimmer a bit it booted up correctly finally (bank 1 / preset 1)
--- In PolySix@yahoogroups.com, "u3dreal" <u3dreal@y...> wrote:
>
> Hello all;
>
> I bought a polysix in rather bad condition...
>
> I did the batteryreplacements and checked to circuits...they seem to
> be OK for both sides of teh PCB
> ...many things were still wrong then I replaced the IC31...and the
octave
> knob and the sub osc were working again.
>
> The Controls are better now but still don't work correctly..
>
> the MG....Delay doesn't work at all and Level gets controlled by the
> VCO PW/PWM knob...? the EG doesn't seem to work either..
> only the sustain can be controlled via the LFO resonance knob..
>
> all the other things like the preset section / loading saving
progamms
> or even sending and receiving banks form external casset recorder
> works....!!!!!
>
> when i try to do the testing procedure with the 56k resistor...the
> following happens.....when i turn the trim clockwise there is a
point
> where is jumps from bankA prog1 to all eight proglights.....this
doesn't
> happen
> for me the two first ( prog 1+2) don' light...sometimes
> its only the first one which doesn't light...
> when i remove the resistor it switches back to prog1 bankA
>
> I have no idea what could be wrong...could it be IC30 or even the
> processor ?? Did you have something simlar ?
>
> How much would a new proc cost?
>
> I really would aprichiate it a lot if you could give me some
advice...
>
>
> thanks in advance
>
> Gregor
>