Discussion about the Korg PolySix synthesizer

Just read this post below!  I am having problems with instability with my patch banks jumping around. When I hit the switches for Programs 5-8 the patch changes to A1, B2, C3, or D4 (for my selection of 5, 6, 7, 8 respectively).  

I just picked up a Korg Polysix that the previous owner informed me had work done on it.  I'm wondering if a new board was installed?  How can I tell whether or not I have a clone board in there?  Everything looks super clean.


--- In PolySix@yahoogroups.com, Andrew Jury <andy@...> wrote:
>
> Hi,
> 
> Glad you are enjoying the entertainment! Seems after a 12 hour bashing the
> errant board I have been trying to diagnose is now stable. Replacing C23
> with a 10pF ceramic seems to hold the clock circuit stable. Seems that the
> noise/instability in the clock signal was indeed an issue and all the other
> pointers described in previous threads were influential, but not the cause
> of the problem. I would therefore suggest, if you are having with problems
> with instability (i.e. The patch banks jumping back to A1) then address the
> issue as described above. Thanks for your help with this one, Malte!
> 
> One other thing. If you have used a transplanted ceramic resonator from the
> original Œ367 do check the legs are still attached to the device. They have
> a habit of breaking off in a way that looks like they are still connected.
> If possible use the blue Murata types listed on the group buy site.
> 
> Regards,
> Andy
> 
> 
> On 03/09/2010 16:51, "ML" <f115@...> wrote:
> > 
> > Thanks for covering so much ground so far. This thread has been an enormous
> > help so far. I'm following along closely!
> 
> 
> 
> [Non-text portions of this message have been removed]
>