Let us know if it helps...
Had the same exact problem on my Trident and it indeed was the expo
coverter.
Thanks ;)
--- In PolySix@yahoogroups.com, "David Davis" <feline1@...> wrote:
>
> Thanks very much for the advice -
> since that only involves replaceing two components on the boards,
> even my wretched soldering skills oughta be able to handle it -
> and it won't cost more than a few pounds...
> Will definately give it a try!
> DAVID
>
> --- In PolySix@yahoogroups.com, "gil_we" <gil_we@> wrote:
> >
> > Check the Files section as for how to replace the optocoupler.
> >
> > Do not touch ANY of the trimpots, as once you replace the bad
part it
> > should stay in its normal tunning.
> >
> >
> > --- In PolySix@yahoogroups.com, "David Davis" <feline1@> wrote:
> > >
> > > After many years faithful service, my polysix seems to have
> > developed
> > > a tuning problem :-(
> > >
> > > Usually when I first switch it on, and initially hit the keys,
the
> > > VCOs swirl around in pitch for about a second? (I presume
that's
> > some
> > > kind of autotune routine or sthg.)
> > >
> > > However, recently, when I turn it on, this doesn't happen, and
the
> > > oscillators stay at some kind of wierd tuning (all the notes
seem
> > > stretched out, the octaves are about a third or more off pitch!)
> > >
> > > One time, I left it for about 20 minutes and when I tried
again, it
> > > was back to normal.
> > > But yesterday it just remained in this wierd state.
> > >
> > > Any suggestions to make it behave?
> > > I made sure that the pitch bend wheel was centred at power up.
> > > The VCOs are switched to "stretch tuning" inside, but that's
never
> > > been a problem before, and this is orders of magnitude more
> > stretched
> > > than that.
> > >
> > > It's not a NiCd battery calamity, as my Polysix was upgraded a
few
> > > years ago to a "PolysixM" (with lithium battery) (Johannes
> > > Hausensteiner's mod)
> > >
> > > DAVID
> > >
> >
>