> From: Brinkmann Music
>
> Hope somebody can help me with this. Powered up today and
> noticed that the polaris is out of tune with itself-
> especially upper two octaves. Seems to be every 3 or 4 half
> steps that are out of whack. Otherwise, o.k.
>
> Left it powered on for hour or so- nope.
> Autotune all voices- nope. And all voices are tuning and
> play- so I haven't lost a voice. Tune individual channels-
> after several attempts- sometimes worked, mostly made it
> worse- bumped it too high or too low- the beating got faster
> or slower- but still hear beats.
>
> Last resort- full reset (I know probably an issue that calls
> for replacing components inside, but I'm lazy- and not good
> with a soldering iron). Nope. Well, at least now I can see
> if Soundiver still works and can load back my patches... and
> play them out of tune. . .
>
> So, what can be done to get it back in tune?

That generally means that one channel has some leakage current pulling the
pitch control voltage around. There is a function in the manual that you can
use to disable the bad channel, in a pinch, leaving you with the good five.
Otherwise, you'll just have to get it fixed. It's probably a leaky cap or
CMOS switch in the sample-and-hold, but could also be in the oscillator
circuit itself.

--

Ciao, Paul D. DeRocco
Paul mailto:pderocco@...