Discussion about the Korg PolySix synthesizer

Is the "OPTO" you speak of the photocoupler?  I'm having a little trouble
locating the replacement part.  Do you have the NTE replacement number - or
where I could find one?

Also - what causes them to go bad?  Could another cirucuit replace the opto?


On 5/6/06, darke_one666 <darke_one666@yahoo.com> wrote:
>
> Hi all,
>
> I keep seeing messages posted regarding tuning etc. I can pretty much
> promise you all that this is caused by the opto on the KLM366.
> Within the last year I have repaired 5 pcb's all suffering from the
> same problem, ie tuning C6 is ok but when you line up C2 to be at the
> correct pitch , the octaves are not correct. I've also see units that
> play an octave over 11 notes C2-B3, not enough range on the pots to
> tune up just to name the common ones. From now I dont even bother
> trying to tune a P6 without swapping the opto as you will most likely
> be wasting yourtime. If you need a pdf copy of the service manual email
> me at ibradshaw@btconnect.com also if you need any tips let me know.
>
> I have really spent a lot of time last summer figuring how these units
> tick and learnt just about everything I could. I've worked
> professionally (if that's how you spell it!) repairing synths over the
> last 18 years and specialise in Korg, Ensoniq, Kurzweil and Alesis
>
>
>
>
>
>
> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
>
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>
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