The Kawai & Teisco Analog Synths Group

You should scratch out the corrosion that lay over the traces and 
remove the ICs at the corroded area, place sockets instead and wire 
the bad traces. If problems still exist after doing that then 
generally what I would suggest is also replacing ICs that connect 
directly with the corroded ICs. BTW, take into account that even 
after recovering the computer board, there might be other bad chips 
that do not relate to the battery corrosion problem.



--- In kawai_sx210@yahoogroups.com, "Mark Daborn" <darkest.yugo@n...> 
wrote:
> Oh well.
> 
> I removed the battery and there was a fair amount of corrosion 
there. Nothing had been eaten through but the tell-tale brown 
discolouring was present. I had to wire-link several components just 
to be on the safe side but the machine is still unwell.
> 
> Poly8 mode produces the most sound although it is sporadic and most 
of the keys dont seem to sound. Poly4 mode produces a high pitch 
static sound like the filter on full resonance over any faint sound 
that may be there. Mono mode now is just a shrill digital fuzz.
> 
> Im beginning to suspect one or more IC's may be faulty but i don't 
have a clue which ones.
> 
> I think it maybe time to hand it over to a tech who knows what 
he/she's doing!
> 
> The only problem is, i don't know of any!!
> 
> Anyway, thanks to everyone for the  help. I just hope i can find 
someone to get this thing working!!