Thanks alot Gil,
I already checked all the traces on the board which might got
affected by the batteryleak. So far they are all working fine.
The Tip with the logic IC on the frontpanel is very good.
I'll try that. I also thought of that. but i wasn't sure.
Update to come soon.
Still if anybody has advice i would appreciate.
thanks to all.
Gregor
>
> > 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
>
> Make sure it didn't experienced any battery leakage. You can look for
> green rust on the PBCs and the components on both the computer board
> and the one that is place above it, attached to the panel. If it did,
> you'll have to rewire some traced and replace some parts that may got
> defected by the acid...
>
>
> > ...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..
>
> I had similar problem on my Trident, which I solved by replacing a
> few logic ICs on the panels, which were directly related with the
> knobs that didn't work properly. In on case I found that a technician
> who tried to fix the machine, has placed on IC one of the ICs in
> reverse !!
>
>
> >
> > all the other things like the preset section / loading saving
> progamms
> > or even sending and receiving banks form external casset recorder
> > works....!!!!!
> >
>
> So the computer board seems to be ok.
>
> > 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
> >
>
> Normal ?....
>
> > I have no idea what could be wrong...could it be IC30 or even the
> > processor ?? Did you have something simlar ?
> >
>
> I would check/replace the suspective ICs on the panel board first.
>