Discussion about the Korg PolySix synthesizer

Hi Andy,

unfortunately, I have no Oscilloscope. Yesterday I have developed the blue Varta battery and have soldered a substitute.
That took me 5 minutes. I am surprised that the programmes are still stored. Now the Polysix needs approx. 45 minutes until it sounds well. I will keep it powerd on for one day, so that the new accumulator loads.
On the week-end I make one more test and tell you more.

Thank you already for the help

Many greetings

Oliver

--- In PolySix@yahoogroups.com, "Andrew Jury" <andy@...> wrote:
>
> Hi Oliver,
> 
>  
> 
> Do you have or know someone who owns an oscilloscope? I have just downloaded
> your files and listened to them. As an example I picked the 'cold' file and
> the '180 minute' file. The third phrase into the file you play a nice saw
> tooth waveform which is very clean when examined closely. However, the cold
> version of the same waveform is superimposed with some terrible noise. When
> you run the noise through a spectrum analyser you can see the contents have
> equal amplitude throughout the audible range of frequencies. My initial
> thoughts were that you might have a problem with the power supply, but you
> would then either get audible hum or harmonic noise at either 50/60Hz
> intervals down the spectrum. This noise looks and sounds like the kind of
> racket generated by digital circuits when they are not decoupled properly.
> If you can lay your hand on a scope attach it to the +5V rail on the KLM-367
> and see how clean the supply is when cold. Then check the coupling
> electrolytics. Others in the group might have their own ideas, but like has
> been said, before you do anything else, de-solder the memory backup battery
> before it leaks!
> 
>  
> 
> Cheers,
> 
> Andy
> 
>  
> 
> From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of
> oseite
> Sent: 15 November 2009 16:24
> To: PolySix@yahoogroups.com
> Subject: [PolySix] Re: Help! My Polysix needs to warm up for 4 hours
> 
>  
> 
>   
> 
> Andy,
> 
> you find the file "warming up Polysix.zip" in the "Files" folder.
> I recorded some different programs.
> 
> cheers
> 
> Oliver
> 
> --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , "Andrew
> Jury" <andy@> wrote:
> >
> > Oliver,
> > 
> > 
> > 
> > When you say it 'sounds bad' what do you mean? Out of tune, dysfunctional,
> > distorted, etc? It is common for a 'board of this vintage to take around
> 30
> > minutes to 'warm up', but 4 hours? Could be lots of things wrong I can
> think
> > of. If you can describe how the instrument sounds after say 15 minutes on
> > from cold? Perhaps even make a recording and post it. That would be a
> great
> > help!
> > 
> > 
> > 
> > Cheers,
> > 
> > Andy
> > 
> > 
> > 
> > From: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>
> [mailto:PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> ] On
> Behalf Of
> > oseite
> > Sent: 11 November 2009 22:08
> > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> 
> > Subject: [PolySix] Re: Help! My Polysix needs to warm up for 4 hours
> > 
> > 
> > 
> > 
> > 
> > I think the battery is allright. It looks fine and the saved sounds work
> > (after warming up - 4 hours).
> > Any other ideas?
> > 
> > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>
> <mailto:PolySix%40yahoogroups.com> , "Jim"
> > <jbgange@> wrote:
> > >
> > > First open it up and check for battery leakage.
> > > 
> > > ----- Original Message ----- 
> > > From: oseite 
> > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>
> <mailto:PolySix%40yahoogroups.com> 
> > > Sent: Wednesday, November 11, 2009 4:30 AM
> > > Subject: [PolySix] Help! My Polysix needs to warm up for 4 hours
> > > 
> > > 
> > > 
> > > Hello,
> > > 
> > > I did not use my Poly6 for some years. When I want to use the Poly6 now,
> I
> > have to turn the power on and wait for about 4 hours. The Polysix has to
> > "warm up" otherwise the sound is bad.
> > > How can I repair it?
> > > 
> > > Thanks
> > > 
> > > Oliver
> > > 
> > > 
> > > 
> > > 
> > > 
> > > [Non-text portions of this message have been removed]
> > >
> > 
> > 
> > 
> > 
> > 
> > [Non-text portions of this message have been removed]
> >
> 
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
>