Discussion about the Korg PolySix synthesizer

Hello everyone, first I would like to thanks for the outstanding work you do
around this korg Polysix ...

>
> I post this message because I have a problem with and I can not solve alone

...

> after the famous battery problem , I replaced the card KLM 367 with KLM-367A PCB Clone, everything goes well (thanks to Andrew Jury and jed Jorgensen !!!) ..

Then I made the Polysix adjustment procedure from the service manual ,
everything is well done... but the problem is that the sound of some presets of the "factory presets A" hear very bad (noisy) , here some example A3, A7, B6) on all of 6 voices:

> http://soundcloud.com/rafdz/a3
> http://soundcloud.com/rafdz/a7
> http://soundcloud.com/rafdz/b6

some other has no problem p ex A1 ...it is very strange!
no change front knob, and it is the original presets

> I started the procedure ( with millimetre , oscilloscope and frequency meter )several times but no change adjustment
> may be the cutoff generates noise... ??? I really have no more solution

Thank you for reading and hope to read you ...( sorry for my English I'm a frenchy !!!

>

I repaired a P6 with a similar problem once (some patches working and
others not and you couldn't overwrite the not working ones) and it
turned out to be the memory chip. That particular chip seems to be very
delicate and I have replaced a few of them over the years. Vintage
planet has spares and I may have a couple in my parts bin if you are
stuck finding one.

MH

On 12/02/2013 1:34 p.m., rafeek.2010 wrote:
>
> Hello everyone, first I would like to thanks for the outstanding work
> you do
> around this korg Polysix ...
> >
> > I post this message because I have a problem with and I can not
> solve alone
> ...
> > after the famous battery problem , I replaced the card KLM 367 with
> KLM-367A PCB Clone, everything goes well (thanks to Andrew Jury and
> jed Jorgensen !!!) ..
> Then I made the Polysix adjustment procedure from the service manual ,
> everything is well done... but the problem is that the sound of some
> presets of the "factory presets A" hear very bad (noisy) , here some
> example A3, A7, B6) on all of 6 voices:
> > http://soundcloud.com/rafdz/a3
> > http://soundcloud.com/rafdz/a7
> > http://soundcloud.com/rafdz/b6
> some other has no problem p ex A1 ...it is very strange!
> no change front knob, and it is the original presets
>
> > I started the procedure ( with millimetre , oscilloscope and
> frequency meter )several times but no change adjustment
> > may be the cutoff generates noise... ??? I really have no more solution
>
> Thank you for reading and hope to read you ...( sorry for my English
> I'm a frenchy !!!
> >
>
>

--
Kind Regards<br>
Murray<br>
murray@paintingwithsound.co.nz<br>
www.paintingwithsound.co.nz<br>



[Non-text portions of this message have been removed]

hi Murray,

Thank you for your quick response! the memory chip was replaced by a TC5514APL-3 chip because the old mermory "HM472114-3" consumed a lot of current power ... i have also replaced all capacitor from effect board , and some at KLM 366

ps:when i turn cutoff knob to 10 the problematics sounds seems good ,without noise ...(but I have evidently no cutoff effect)

--- In PolySix@yahoogroups.com, Murray wrote:
>
> I repaired a P6 with a similar problem once (some patches working and
> others not and you couldn't overwrite the not working ones) and it
> turned out to be the memory chip. That particular chip seems to be very
> delicate and I have replaced a few of them over the years. Vintage
> planet has spares and I may have a couple in my parts bin if you are
> stuck finding one.
>
> MH
>
> On 12/02/2013 1:34 p.m., rafeek.2010 wrote:
> >
> > Hello everyone, first I would like to thanks for the outstanding work
> > you do
> > around this korg Polysix ...
> > >
> > > I post this message because I have a problem with and I can not
> > solve alone
> > ...
> > > after the famous battery problem , I replaced the card KLM 367 with
> > KLM-367A PCB Clone, everything goes well (thanks to Andrew Jury and
> > jed Jorgensen !!!) ..
> > Then I made the Polysix adjustment procedure from the service manual ,
> > everything is well done... but the problem is that the sound of some
> > presets of the "factory presets A" hear very bad (noisy) , here some
> > example A3, A7, B6) on all of 6 voices:
> > > http://soundcloud.com/rafdz/a3
> > > http://soundcloud.com/rafdz/a7
> > > http://soundcloud.com/rafdz/b6
> > some other has no problem p ex A1 ...it is very strange!
> > no change front knob, and it is the original presets
> >
> > > I started the procedure ( with millimetre , oscilloscope and
> > frequency meter )several times but no change adjustment
> > > may be the cutoff generates noise... ??? I really have no more solution
> >
> > Thank you for reading and hope to read you ...( sorry for my English
> > I'm a frenchy !!!
> > >
> >
> >
>
> --
> Kind Regards<br>
> Murray<br>
> murray@...<br>
> www.paintingwithsound.co.nz<br>
>
>
>
> [Non-text portions of this message have been removed]
>

hi,

now is good , I have found a bad 4558 op amp on klm367 ic 11 !!
thanks

raf

--- In PolySix@yahoogroups.com, "rafeek.2010" <rafeek.2010@...> wrote:
>
> Hello everyone, first I would like to thanks for the outstanding work you do
> around this korg Polysix ...
> >
> > I post this message because I have a problem with and I can not solve alone
> ...
> > after the famous battery problem , I replaced the card KLM 367 with KLM-367A PCB Clone, everything goes well (thanks to Andrew Jury and jed Jorgensen !!!) ..
> Then I made the Polysix adjustment procedure from the service manual ,
> everything is well done... but the problem is that the sound of some presets of the "factory presets A" hear very bad (noisy) , here some example A3, A7, B6) on all of 6 voices:
> > http://soundcloud.com/rafdz/a3
> > http://soundcloud.com/rafdz/a7
> > http://soundcloud.com/rafdz/b6
> some other has no problem p ex A1 ...it is very strange!
> no change front knob, and it is the original presets
>
> > I started the procedure ( with millimetre , oscilloscope and frequency meter )several times but no change adjustment
> > may be the cutoff generates noise... ??? I really have no more solution
>
> Thank you for reading and hope to read you ...( sorry for my English I'm a frenchy !!!
> >
>