Discussion about the Korg PolySix synthesizer

hi, 
i am working on a polysix that is sometimes perfectly functional for long stretches, but 
randomly exhibits a weird problem. it seems to have nothing to do with how long it's been 
on. basically, the bank d button and patch 4 button start to come on and the patch starts 
to deteriorate, turning on vco modulation, pwm, etc, and doesn't want to save patterns 
correctly. it's always d and 4. the battery has recently been replaced with a new one, and 
some minor corrosion damaged was repaired. sometimes the synth behaves normally, and 
has no problem saving and recalling patches. 
any ideas? 
thanks, 
greg

that's really interesting, i have a similar problem - bank D and patch 4.
but i'm not sure about the patch degradation... sometimes i DO get the VCO
modulation but i always thought it was the old patches. it could be exactly
the same as your problem.

i changed the leaked battery, i changed both IC30 and IC31, i also changed
IC22 (the CPU) and repaired quite a few broken traces.

cheers,
jure

On 6/3/06, gregory zifcak <foleymachine@yahoo.com> wrote:
>
> hi,
> i am working on a polysix that is sometimes perfectly functional for long
> stretches, but
> randomly exhibits a weird problem. it seems to have nothing to do with how
> long it's been
> on. basically, the bank d button and patch 4 button start to come on and
> the patch starts
> to deteriorate, turning on vco modulation, pwm, etc, and doesn't want to
> save patterns
> correctly. it's always d and 4. the battery has recently been replaced
> with a new one, and
> some minor corrosion damaged was repaired. sometimes the synth behaves
> normally, and
> has no problem saving and recalling patches.
> any ideas?
> thanks,
> greg
>
>
>
>
>
>
>
>
>
>
> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> Yahoo! Groups Links
>
>
>
>
>
>
>
>


[Non-text portions of this message have been removed]

wow. i'm guessing it's battery corrosion related then, since there's a
 better chance of that than of the same thing failing on the actual
button board.

--- In PolySix@yahoogroups.com, "jure zitnik" <kokoon@...> wrote:
>
> that's really interesting, i have a similar problem - bank D and
patch 4.
> but i'm not sure about the patch degradation... sometimes i DO get
the VCO
> modulation but i always thought it was the old patches. it could be
exactly
> the same as your problem.
> 
> i changed the leaked battery, i changed both IC30 and IC31, i also
changed
> IC22 (the CPU) and repaired quite a few broken traces.
> 
> cheers,
> jure
> 
> On 6/3/06, gregory zifcak <foleymachine@...> wrote:
> >
> > hi,
> > i am working on a polysix that is sometimes perfectly functional
for long
> > stretches, but
> > randomly exhibits a weird problem. it seems to have nothing to do
with how
> > long it's been
> > on. basically, the bank d button and patch 4 button start to come
on and
> > the patch starts
> > to deteriorate, turning on vco modulation, pwm, etc, and doesn't
want to

> > save patterns
> > correctly. it's always d and 4. the battery has recently been replaced
> > with a new one, and
> > some minor corrosion damaged was repaired. sometimes the synth behaves
> > normally, and
> > has no problem saving and recalling patches.
> > any ideas?
> > thanks,
> > greg
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
> 
> 
> [Non-text portions of this message have been removed]
>