[sdiy] Korg Polysix - now weirdness

Doug Terrebonne dougt55 at yahoo.com
Wed Nov 19 22:34:19 CET 2008

Are you sure you're keyboard contacts don't just need cleaning? It is very common for the rubber-dome contacts to become oxidized. I've seen several where all the keys didn't work because of this...


--- On Wed, 11/19/08, Karl Ekdahl <elektrodwarf at yahoo.se> wrote:

> From: Karl Ekdahl <elektrodwarf at yahoo.se>
> Subject: Re: [sdiy] Korg Polysix - now weirdness
> To: synth-diy at dropmix.xs4all.nl
> Date: Wednesday, November 19, 2008, 11:16 AM
> Hi list
> So i installed new processors in the polysix (thanks
> peter!), but to no avail. In my desperation however i
> disconnected the keyboard connector and tried shorting the
> different pins together - Sound!! Of course i got multiple
> notes playing but at least the things was doing *something*.
> I wondered if the diodes were blown or put in the wrong way,
> but the only way i can get it to work is by bypassing the
> diodes or putting them in the wrong way - which of course
> yields multiple notes, again. So what the hell is going on??
> I'm now considering whether ALL the pull-up resistors to
> the keyboard could be blown??
> Karl
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