[sdiy] Korg Polysix - now weirdness

[jure zitnik]

i've tuned two different polysixes, neither was fun, but one was a
real pain in the ass.
not having a scope didn't help, but i managed.

On Thu, Nov 20, 2008 at 7:19 PM, Karl Ekdahl <elektrodwarf at yahoo.se> wrote:
> Hi list
>
> Well i think that one oscillator might be shot, i installed another voice-board and it took me 5 minutes to tune the whole thing.. It seems like it's now working just great! Now to find a contemporary replacement for the battery-holder, the radioshack part given on old crow's site is gone i guess so anyone know of a Mouser partnumber that works?
>
> Karl
>
>
> --- Den tors 2008-11-20 skrev Nate Reeves <djservs at comcast.net>:
>
>> Från: Nate Reeves <djservs at comcast.net>
>> Ämne: Re: [sdiy] Korg Polysix - now weirdness
>> Till: "Synth-DIY DIY" <synth-diy at dropmix.xs4all.nl>
>> Datum: torsdag 20 november 2008 17.11
>> I think you use the low C and high C to tune it, i cnt
>> remember it wasnt fune to tune, i guess it doesnt have an
>> auto tune function?
>>
>> i like the matrix 6 or 6 trak as they have an auto tune
>> procedure but yea you have top connect a tuner to the poly
>> six~!
>>
>> cheers
>> nate
>>
>> On Nov 19, 2008, at 7:59 PM, Karl Ekdahl wrote:
>>
>> > Thanks all for your replies.
>> >
>> > It turns out that the dude who "repaired"
>> the polysix before me managed to install each and every
>> diode in the scanning matrix backwards... ...wow...
>> >
>> > Anyway it's supposeably "working" now
>> but now i'm in tuning-hell. I managed to get all voices
>> to tune up fairly well despite the service manuals pretty
>> crappy description (by "Play C6 and adjust VR11 to
>> 0Cent" they mean 4186hZ - right?) except for one voice
>> that totally refuses. Basically there's no more
>> "turn" on the low-tune pot and i cannot get it to
>> work. Does it seem like my Oscillator #3 (that refuses to
>> tune) is busted somehow to anyone but me?
>> >
>> > Furthermore the service manual doesn't mention
>> VR14 (D#4-E4 ADJ) or VR15 (tune mid). Also, the switch which
>> is talked about on tuning step 1: "Change circuit board
>> slide switch to opposite position (away from VR1)"
>> doesn't seem to change anything, i'm guessing
>> "away from VR1" means the back position, towards
>> the rear. VR1, VR3 and VR15 also makes the pitch
>> "slide" when i turn them, but i'm guessing
>> that's normal. VR14 (D#4-E4 ADJ) doesn't seem to be
>> affecting much of anything.
>> >
>> > Arghhh  three hours just on trying to tune this
>> @!@#$!@ thing...
>> >
>> > Thanks
>> >
>> > Karl
>> >
>> >
>> >
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