Discussion about the Korg PolySix synthesizer

If IC32 is broken, you would have problems with storing and recalling
patches.
But if you want to try, you can get replacement from me - generic part on
small PCB adapter.
I'm going on vacations in a moment, so just brief here.

Roman

----- Original Message -----
From: "rignellio" <rignellio@yahoo.co.uk>
To: <PolySix@yahoogroups.com>
Sent: Sunday, August 13, 2006 3:05 AM
Subject: [PolySix] Re: Polysix: effects don't work, has to be in manual mode
to sound


> Hi Roman,
>
> Checked all these traces and everything is fine. The only trace I have
> had to fix so far was on the little trace coming down off pin 12 on
> IC32. IC32 is giving off around 5v turned on, and 0v off, which I
> assume is normal.
>
> In my last post I mentioned fixing another trace but I was in bad
> light and found this wasn't correct. I've removed this now and the
> Resonance is working again so consider that resolved. The other
> problems (programmer, no fx, vca atten not working, sub osc etc) are
> all still evident, but aside from those it is sounding great.
>
> All the traces seem ok so I suspect there is a problem with IC32, as
> that's where the majority of damage took place? Anything I can check
> further on this chip? And where can I find a replacement in the UK?
>
> Thanks,
>
> Tim
>
> --- In PolySix@yahoogroups.com, "Roman" <modular@...> wrote:
> >
> > looks to me like you still have broken traces on P11 and D03 lines.
> > S check with continuity meter 2 networks (part designator and pin
> number):
> > IC31-3
> > IC26-14
> > CN06-6
> > CN10-1
> > IC33-9
> > IC28-13
> > IC34-13
> >
> > second one:
> > IC22-28
> > CN06-8
> > CN10-7
> >
> > also check if IC31 (74LS08) is working properly. This poor little guy
> > usually suffers the most from battery leakage
> >
> > hope that helps
> >
> > Roman
> >
> > ----- Original Message -----
> > From: "rignellio" <rignellio@...>
> > To: <PolySix@yahoogroups.com>
> > Sent: Monday, July 31, 2006 11:12 PM
> > Subject: [PolySix] Re: Polysix: effects don't work, has to be in
> manual mode
> > to sound
> >
> >
> > > Hi Roman,
> > >
> > > I read through the the Sputniik/Aero thread and he looks like he's a
> > > bit further on than me!
> > >
> > > I found one really short trace which was broken and fixed that, I
> > > don't know if there is a map of where the traces go because it's
> > > difficult when they are under IC's etc. Anyway I've been thorough and
> > > I can't see any problems with them. However I am prepared to be proved
> > > wrong.
> > >
> > > I didn't give a complete analysis of everything that's wrong with my
> > > machine:
> > >
> > > - The octave is only switchable between 16' and 8', 4' sounds the same
> > > as 16'
> > >
> > > - PW functions exactly the same as PWM
> > >
> > > - The Sub Osc will take the Polysix out of Manual mode when switching
> > > to -1, but you can just press Manual again. -2 does the same but
> > > Manual won't work with the switch in that position.
> > >
> > > - The VCA Attenuator isn't working at all
> > >
> > > I tested the pins on CN03 and I get these results:
> > >
> > > pin 1 varies between -5v and +4v depending on where the Effects
> > > Speed/Intensity knob is
> > > pins 2,3,4 are all reading 0.1v constantly
> > > pins 5,6 are constant around -4-5v
> > > pin 7 changes from around -5v to +5v depending on where the Resonance
> > > knob is.
> > >
> > > I'm going to test CN06 and i'll tell you what I find there shortly.
> > > Thanks for the help,
> > >
> > > Rich
> > >
> > >
> > >
> > > --- In PolySix@yahoogroups.com, "Roman" <modular@> wrote:
> > > >
> > > > 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@>
> > > > 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
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> > > > > Yahoo! Groups Links
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
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> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> Yahoo! Groups Links
>
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