Discussion about the Korg PolySix synthesizer

--- Thanks for your response. If I read you comments right, you say 
that if the traces to the processor or IC31 are damaged you possibly 
will not get any sound? Does this also hold true if you try to play 
it in "manual mode"? 
I did take out the old battery and tied in a fresh battery to see if 
I could get sound out of it but no luck.  There was a little acid 
leak which I cleaned up and did a "quick" continuity on the traces 
around the chip which seemed to be fine. Obviously that does not mean 
traces underneath or the vias are good. Please confirm that in deed 
if traces are bad even if in maunal mode I will not get sound. 
Thanks.  






In PolySix@yahoogroups.com, "Seppo Sipilä" <Seppo.Sipila@m...> wrote:
> > and stable. Powered it up and I still have no sound. CAn anyone 
tel 
> > me if this is a Battery issue. I would think a battery leak 
problem 
> > would not allow you to store but would it cause NO SOUND? Looking
> > for some areas to next look at. 
> 
> The battery leak on my Polysix was very hard to see, but it damaged 
> the memory circuit board and the nearest chip underneath so that I 
> had complete sound loss and several memory lights lighting up at 
the 
> same time. The damage screwed up the memory board so that the poor 
> thing didn't know what settings to use and went silent instead.
> 
> Just in case someone doesn't know this yet: if you have a Polysix 
> that has never had the battery replaced, DO IT NOW. The battery is 
> more than 20 years old and just waiting to leak corrosively all 
over 
> the memory circuit board. If it hasn't done so yet, you've been 
lucky 
> - but it won't last. I found this out the hard way (luckily I had 
my 
> patches backed up just recently and a soldering wizard of a friend 
to 
> do the repair job properly). 
> 
> Now it works perfectly again with a modern metal hydride battery, 
but 
> it was a much bigger soldering & chip-replacing job than just 
> replacing the old battery before it leaks. There are excellent 
> Polysix battery leak repair instructions on Old Crow's pages 
(thanks 
> a 1000000): http://www.oldcrows.net/~oldcrow/synth/korg/polysix/
> 
> S.