The Kawai & Teisco Analog Synths Group

only the top and bottom big ones....




--- In kawai-teisco@...m, "mike.rophun" <mike.rophun@...>
wrote:
>
> 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
> > >
> >
>