Rhodes Chroma Polaris

> 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@...