Discussion about the Korg PolySix synthesizer

you mean KLM-367?

i wonder what could cause that led flashing?

jure

On 1/30/06, gil_we <gil_we@yahoo.com> wrote:
> It sounds like the KLM-267A is not fully functioning yet
>
>
> --- In PolySix@yahoogroups.com, jure zitnik <kokoon@g...> wrote:
> >
> > here's the thing:
> > i'm not repairing the polysix myself but i'm still pretty involved
> > since the man repairing it doesn't have that much experience with
> > analogue synths. and i have zero experience with actual physical
> work
> > on synths :/
> >
> > so - the polysix:
> > the battery leaked but the traces were repaired. this guy probably
> did
> > it all correctly but i'm not 100% sure. let's say they're alright
> now.
> > we also replaced IC31 (the lower of the 2 identical 4xAND gates) but
> > the symptoms are still the same as they were before the repair:
> > - synth usually works okay for the first half hour or so. except the
> > patch storage.
> > - patch programmer: bank 3 and prog 3 are lit all the time. you can
> > select another bank and program but nothing can be saved.
> > - the attenuator 13 way switch doesn't work at all.
> > - after some time other controls stop responding (and stay like they
> > were set): waveform selector, VCA gate mode and effect selector.
> > - usually when this happens some program and bank leds (actually
> bank
> > 1 and 2 and program 2) start dimly blinking like there's some short
> > circuit or something. this gives me doubts whether it's really CPU
> > (IC21) fault. if it were faulty it would probably just die or
> > something... right?
> >
> > so - what would you guys check next? how possible do you think it is
> > that it's the CPU? what about the 18-pin SRAM IC? any other ICs that
> > usually fail?
> >
> > i really appreciate your help so far!
> >
> > thanks!
> > jure
> >
>
>
>
>
>
>
>
>
> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> Yahoo! Groups Links
>
>
>
>
>
>
>