Discussion about the Korg PolySix synthesizer

I haven't looked into the issue yet, but I figure I'd start here by 
simply asking.  One of the voices goes sharp. I repaired this PolySix 
at the beginning of the year and things have been fine up until the 
past few days. Sometimes now when I turn it on, I have to turn it off 
then on again to get the bank and program buttons to light and 
function.  Is there a correlation here or are these separate issues?

i have the same issue on one of my both synths. voice 5 has another
sharpness. all what i can say. i changed all IC's, but the same effect.
i guess some condensator is damaged. they will loose there capaticity within
the years. if you find something, it would really usefull for me.
maybe its also an issue of the older voice boards. my one with that issue is
from the first revision

Sebastian
----- Original Message ----- 
From: "toorglick" <toorglick@yahoo.com>
To: <PolySix@yahoogroups.com>
Sent: Saturday, June 19, 2004 7:48 AM
Subject: [PolySix] Why would a single voice go out of tune?


> I haven't looked into the issue yet, but I figure I'd start here by
> simply asking.  One of the voices goes sharp. I repaired this PolySix
> at the beginning of the year and things have been fine up until the
> past few days. Sometimes now when I turn it on, I have to turn it off
> then on again to get the bank and program buttons to light and
> function.  Is there a correlation here or are these separate issues?
>
>
>
> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
>
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I think I have a later revision board IIRC.  I think my issues may be 
separate.  It seems that after the PolySix has had time to "warm up" 
the sixth voice doesn't go sharp.  I've been intending to get inside 
of her again and maybe modifiy the key contacts so they fire better, 
so perhaps I'll do that sooner than later.  It's been rather humid in 
my neck of the woods lately, so maybe that has something to do with 
it, too.

If I discover anything, I'll be sure to post it here.


--- In PolySix@yahoogroups.com, "BrainSlayer" <brainslayer@c...> 
wrote:
> i have the same issue on one of my both synths. voice 5 has another
> sharpness. all what i can say. i changed all IC's, but the same 
effect.
> i guess some condensator is damaged. they will loose there 
capaticity within
> the years. if you find something, it would really usefull for me.
> maybe its also an issue of the older voice boards. my one with that 
issue is

> from the first revision
> 
> Sebastian

Okay, bizarre.  Turned it on tonight and no problems.  It's noticably 
cooler and dryer tonight in the studio.  Condensation + heat + old 
synthesizer = ?



--- In PolySix@yahoogroups.com, "toorglick" <toorglick@y...> wrote:
> I think I have a later revision board IIRC.  I think my issues may 
be 
> separate.  It seems that after the PolySix has had time to "warm 
up" 
> the sixth voice doesn't go sharp.  I've been intending to get 
inside 
> of her again and maybe modifiy the key contacts so they fire 
better, 
> so perhaps I'll do that sooner than later.  It's been rather humid 
in 

> my neck of the woods lately, so maybe that has something to do with 
> it, too.
> 
> If I discover anything, I'll be sure to post it here.
> 
>