Discussion about the Korg PolySix synthesizer

I have a polysix which was working fine yesterday, but
today when I press the middle 'D' key, the polysix 
automatically switches to 'unison' mode. Pressing 'D'
again gives a garbled output, but all other keys work
OK. The 'D' is the d in the 3rd octave from the left. The
'd' in the 4th octave also does the same. All other keys
are fine.

I also noticed that when I switch on the polysix, it defaults
to UNISON mode and also voice 1 is sounding. This is 
true even if the keyboard is unplugged, so its not a faulty
keyboard.

Any ideas what this bizare behaviour might be. I dont have
a schematic so not able to check. 

My polysix is fitted with a new KLM-377 board which has
been working perfectly, and otherwise appears to work
fine.

Ian.

the schematics and service manual are in the files section for the
yahoo group.  Haven't heard of this problem personally though.

On Thu, Jul 1, 2010 at 6:50 AM, silvercreekvalley
<silvercreekvalley@yahoo.com> wrote:
> I have a polysix which was working fine yesterday, but
> today when I press the middle 'D' key, the polysix
> automatically switches to 'unison' mode. Pressing 'D'
> again gives a garbled output, but all other keys work
> OK. The 'D' is the d in the 3rd octave from the left. The
> 'd' in the 4th octave also does the same. All other keys
> are fine.
>
> I also noticed that when I switch on the polysix, it defaults
> to UNISON mode and also voice 1 is sounding. This is
> true even if the keyboard is unplugged, so its not a faulty
> keyboard.
>
> Any ideas what this bizare behaviour might be. I dont have
> a schematic so not able to check.
>
> My polysix is fitted with a new KLM-377 board which has
> been working perfectly, and otherwise appears to work
> fine.
>
> Ian.
>
>
>
>
>
>
>
> ------------------------------------
>
> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6Yahoo! Groups Links
>
>
>
>



-- 
.sig
-Chromatest J. Pantsmaker
http://www.chromatest.net

--- In PolySix@yahoogroups.com, silvercreekvalley <silvercreekvalley@...> wrote:
>
> I have a polysix which was working fine yesterday, but
> today when I press the middle 'D' key, the polysix 
> automatically switches to 'unison' mode. Pressing 'D'
> again gives a garbled output, but all other keys work
> OK. The 'D' is the d in the 3rd octave from the left. The
> 'd' in the 4th octave also does the same. All other keys
> are fine.
> 
> I also noticed that when I switch on the polysix, it defaults
> to UNISON mode and also voice 1 is sounding. This is 
> true even if the keyboard is unplugged, so its not a faulty
> keyboard.
> 
> Any ideas what this bizare behaviour might be. I dont have
> a schematic so not able to check. 
> 
> My polysix is fitted with a new KLM-377 board which has
> been working perfectly, and otherwise appears to work
> fine.
> 
> Ian.
>
Check to see if there's a wire or flexcable in the direct vicinity of the mechanics of the D key..Pushing or rubbing a cbale might cause weird stuff

Its definitely not the keyboard, if I unplug it, I get 
the same behaviour.

Sometimes, it manifests itself as doubling up of voices
eg press a key and get 2 voices sounding - all good fun :)

Andy suggested that I spray the key assigner CPU with freeze
spray and it definitely helps - so it looks like that might
be the issue. Many thanks Andy for the tips by the way.

Ian