Discussion about the Korg PolySix synthesizer

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@yahoo.co.uk>
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
>
>
>
>
>
>
>