The Kawai & Teisco Analog Synths Group

I suspect that the battery has leaked inside. If this is the case the
fix is not simple at all, and I'd suggest that you try to contact one
of the guys doing synth board repairs and recovery such as Oldcrow
(look on google). This assumption is due to the age of the unit.

However, following your description, it might be a dead chip in the 
voice section (oscillator or EG of one particular voice). I had a 
particulat voice problem happenning TWICE, on each once I found the 
exact same chip dead on two different voice EG sections. It was a 
4xxx chip which is known to have life span of about 15 years or so.

If you know some electronic diagnostics and repair I can give you
some direction of how to try to determine the bad chip. But first of
all open it up and look at the battery (white, on the middle,
processor board). If it is good and has not leaked REPLACE IT NOW !!!
because it is going to every second. Any electronic technician can do
this very easily. If the battery's OK so you're good. You just have
to determine the bad chip, which I'm almost sure is laying on the
circuit of the bad voice oscillator or EG section.

This synth definately worths fixing. I just got an Emu
sampler to which I'm going to sample every analog unit I have as it
seems they are all going to die in a few years... These 4xxx chips 
are all going to die soon I assume, not taking about other components 
of course as capacitor for example. I don't give them too many years 
from now.




--- In kawai_sx210@yahoogroups.com, Alan Johnston <ataboyal2001@y...> 
wrote:
> Thanks for the advice!I think I might take it to someone who knows 
what they are doing!!I've had this thing under my bed for about 10 
years!!LOL  ataboyal
> 
> esasafrazz@f... wrote:this sounds more like a key contact problem, 
(maybe dirty) or a dead 
> voice maybe ?
> Im certainly no expert though
> 
> Whatever you do, definetly get it fixed, you have a special, 
underrated 
> synth!!
> 
> On Aug 23, 2004, at 7:16 PM, ataboyal2001 wrote:
> 
> >
> >     Hey Guys,
> >
> >
> >     I have a problem with a SX210 I have.It seems about every 4th 
or
> > 5th note is dead.Is something wrong----would the battery I hear 
you
> > guys talk about do something like this?????Please, any help would 
be
> > appreciated----don't know anything about keyboards!!   
ataboyal2001
> >
> >
> >
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