Discussion about the Korg PolySix synthesizer

Hi Bob,

Any luck with this one? Got the same issue. Looking at the 560p between pin 4 and 5 of the ssm.

Pat

--- In PolySix@yahoogroups.com, Robert Stewart <bob@...> wrote:
>
> First thing I did.
> Problem is not the SSM2044
> 
> :-s
> On 10/07/2013 14:53, alesisfusion8hd wrote:
> >
> > Have you swap SSM2044 with another voice to make sure the issue 
> > follows the filter? Never serviced a Polysix though, but I had a 
> > similar behavior on my Trident MkII. The SSM2044 was faulty.
> >
> > HTH
> > François
> >
> > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>, 
> > "blzproductions" <bob@> wrote:
> > >
> > > Hi
> > >
> > > Servicing a Polysix for a client, and have come up against a weird 
> > issue, which I can't fathom. Hoping someone out there has had a 
> > similar issue, and may be able to help...
> > >
> > > One voice has a faulty filter section in that the resonance can be 
> > adjusted as per the line up procedure, but then if you lower the cut 
> > off, the resonance decreases.
> > >
> > > I have ruled out the problem being the SSM2044, all signals coming 
> > into the chip (ie. cut off/resonance control etc.) look correct, and 
> > are comparable, and I'm pretty sure it's not the filter caps as 
> > they're not electrolytics or Tantalums.
> > > Also the connections between the caps and the filter chip are all OK.
> > >
> > > If anyone has any ideas, please get it touch. It's beginning to 
> > drive me mad.
> > >
> > >
> > > Bob
> > >
> >
> > 
> 
> 
> 
> [Non-text portions of this message have been removed]
>