Hello there, i'm having a similar problem with my polaris, that also
needs a front panel replacement. However i was able to control it via
midiquest editor. Some days ago it lost voice from some keys and when
i opened soundquest to get to the channel check it couldn't complete
the data exchange through midi -only a small amount of bytes.

So should i replace the control panels first of all?

2013/6/19, Harvey Peekar <audaciouspen@...>:

> Much appreciated! i found that the first channel is in fact out, so know im
> going to try to whittle it down to see if i can pinpoint which oscillator it
> is. Thank You, Paul!
>
> --- On Mon, 6/17/13, Paul D. DeRocco wrote:
>
> > From: Paul D. DeRocco
> > Subject: RE: [chromapolaris] losing my voice..
> > To: chromapolaris@yahoogroups.com
> > Date: Monday, June 17, 2013, 2:48 PM
> >
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> > > From: Harvey Peekar
> >
> > >
> >
> > > in the past few months i've been noticing that my
> > chroma
> >
> > > wont sound as many keys as it used too. Im pretty sure
> > that
> >
> > > some of the voices are out, but im at a loss as to how
> > i can
> >
> > > find out which ones. when i use the tune all function,
> > the
> >
> > > light only blinks four times, and im under the
> > impression
> >
> > > that it should blink once for each voice which is 6.
> > that
> >
> > > being said, i dont know how to find out which voices
> > are
> >
> > > broken, or what im even supposed to look for. i have
> > basic
> >
> > > knowledge when it comes to synth repair, and im hoping
> > that
> >
> > > this is something i can diagnose myself unless i need
> > special
> >
> > > tools. any help from this group would be greatly
> > appreciated!
> >
> >
> >
> > This function is covered in the Polaris Owner's Manual,
> > but you have to read
> >
> > through the list of switch functions in the back in order to
> > find it, since
> >
> > it's not an everyday sort of function. On page 119, it
> > mentions LOWER
> >
> > FUNCTION, CHANNEL CK, which shows which channels are
> > functioning by lighting
> >
> > up LEDs 1-6. You will undoubtedly see a couple that are
> > missing. Step one in
> >
> > diagnosing the problem is to press the switches for the
> > channels that are
> >
> > enabled to disable them, and press one of the switches for
> > the
> >
> > malfunctioning channels to enable it. Then, you can play on
> > that channel to
> >
> > see if its sound gives you a clue as to what's wrong.
> > And then you can
> >
> > disable that channel and enable the other bad channel to
> > figure that one
> >
> > out.
> >
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> >
> > If both oscillators in a channel are out of tune, or you
> > can't get the A
> >
> > oscillator to sound at all, then you have a failure in the A
> > oscillator
> >
> > circuit. If the A oscillator sounds in tune but B is out of
> > tune or not
> >
> > making any sound, then B is failing. If both oscillators
> > sound right, then
> >
> > there's a problem in the filter.
> >
> >
> >
> > But those are just clues, and not always correct. If both
> > oscillators are
> >
> > out of tune, it could also be something downstream
> > preventing the sound from
> >
> > going into the auto-tune input. There's no magic way to
> > get the hardware to
> >
> > tell you exactly what's wrong with itself, but sometimes
> > you can figure
> >
> > something out which steers you to the right general area.
> > But then you have
> >
> > to go into the circuitry and narrow it down, which may not
> > be possible
> >
> > without a scope. But one good thing about the Polaris is
> > that most of them
> >
> > have socketed ICs. This means that you can at least try
> > swapping certain ICs
> >
> > with the ones in working channels to see if that changes
> > anything. (Do the
> >
> > swapping with the power off.) You might get lucky that way.
> >
> >
> >
> > --
> >
> >
> >
> > Ciao, Paul D. DeRocco
> >
> > Paul mailto:pderocco@...
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