Discussion about the Korg PolySix synthesizer

about the effect problem - measure the voltage at CN03 on KLM367 and see if
they change when you turn the following:
effect speed
effect type
VCA attenuation
VCF resonance
you should also see slow changing voltage if you have selected VCA
modulation by LFO
If they change, and not stay the same all the time, then your effect board
might be broken. But if one pins of CN03 doesn't appear to carry changing
voltage no matter what switch/pot you turn from above mentioned - that means
you still have some traces broken after battery leakage. If you also say you
cannot save - the fault may be in CN06 area, as aero/sputnik979 have
discovered recently.

Roman

----- Original Message -----
From: "rignellio" <rignellio@yahoo.co.uk>
To: <PolySix@yahoogroups.com>
Sent: Sunday, July 30, 2006 3:18 PM
Subject: [PolySix] Polysix: effects don't work, has to be in manual mode to
sound


> Hi,
>
> I've read through some posts on similar lines but couldn't find much
> that specifically related to my problem. Apologies in advance because
> I know you get these kind of posts all the time.
>
> I got a Polysix recently for next to nothing, the battery had leaked
> but from a quick inspection it looked reasonably healthy, plus it
> still made sound.
> So i proceeded to follow the Polysix battery replacement procedure on
> Old Crow's site, and now it is working better than before but still
> has some major functions missing:
>
> a) The programmer isn't working, and it has to be in Manual for it to
> work properly. Nothing can be saved to the memory.
>
> b) Also none of the effects work, and it has to be set to 'Phaser' for
> it to sound at all. Note there is no Phaser effect audible and the
> Speed/Intensity knob has no effect.
>
> So I reckon either a chip or a combination of traces are faulty. Most
> of the pins around the chips look ok but I'm very inexperienced with
> electronics. But hey, I got this far.
> How can I test IC31 or IC22 for problems? And if they are broken, can
> anyone recommend a place to get spares in the UK?
>
> Thanks,
> Richard
>
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> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> Yahoo! Groups Links
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