The Kawai & Teisco Analog Synths Group

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
>