The Kawai & Teisco Analog Synths Group

Thanks for the quick answer.
I thought of something like a "bad voice".
So, how do I open the SX210?
I found many screws at the bottom and also some on top or at the back.
Do I have to unscrew all of them or only the big ones?
I do not want to loosen things inside...

Cheers, Mike

--- In kawai-teisco@yahoogroups.com, "gil_we" <gil_we@...> wrote:
>
> If the stuck note happens every 8 notes played, than it is a 
specific 
> voice (oscillator) related problem, probably a bad IC in the 
envelope 
> section.
> 
> You need to determine which voice is the one which the problem lays 
> in. Most of the times, when you power the unit up and start 
playing, 
> the first note played will get directed to the first voice, the 
> second note to the second voice etc. 
> 
> I already had 2 bad 4066 chips in mine, so I bet on a bad 4066 in 
> yours as well. You will need to get (or purchase) a schematic 
manual, 
> or just go over with an audio scope and try to find the bad IC.
> 
> 
> 
> 
> --- In kawai-teisco@yahoogroups.com, "mike.rophun" <mike.rophun@> 
> wrote:
> >
> > Hello group.
> > 
> > First, this is a great knowledge base. I read nearly all of the 
> post.
> > But it seems that my problem is slightly different.
> > 
> > When I play some sound, one oscillator stucks with the note until 
> it 
> > is retriggered by another.
> > i.e. I play c-d-e-f-g the g stucks - keeps on sounding regardless 
> > what the ENV looks like - then I play futher on a-b-c-d-e and the 
e 
> > stucks again,releasing the prior stuck g.
> > Do you know what I mean?
> > 
> > I did not open the SX210 so far to check the battery.
> > Any healing far-distance diagnostics?
> > 
> > Cheers, mike
> >
>