Rhodes Chroma Polaris

Hello-
It's possible to work out some of this yourself;  it requires some 
patience, some attention and much reading.
The service manual tells you a lot about the instrument;  your main goal 
should be to track down existing problems without causing any new ones.

To do this, you have to understand some things about this particular 
instrument;  for example, many of the operating system parameters are 
memory-based -- if it loses memory, it's not just the patch information, 
but the envelope & VCA offsets, MIDI settings, etc.  Restoring this is 
more than just doing a patch reload;  there are twenty or thirty 
key-presses and slider adjustments, which are detailed in the manual.

And, of course, this all depends on the membrane buttons being fully 
functional;  if they're not, you have to address that issue before doing 
anything else.

~G


On 10/10/2013 12:08 PM, c.puidokas@... wrote:
>
> Hi Everyone!
>
>
> How are you doing?  I just joined this board in an effort to have my 
> Chroma Polaris be something other than a heavy paperweight.
>
> I'm trying to diagnose the problems that my Polaris is showing.
>
> So far I have done the following:
>
> ~ Plugged it in and tried playing a few notes - there was sound with a 
> few keys, but it only registered the same note each time and on 
> different keys and constantly alternating keys.  Some of the slider 
> controls affected the sound (Attack, release, and decay), but others 
> were unresponsive.
>
> ~ I then attempted to run diagnostics using the lower function and 
> program select buttons.  However, I was unable to engage the lower 
> function LED rendering a diagnostic scan impossible (at least from 
> what I can understand).
>
> ~ When I turned the Polaris off and on again different sets of LED's 
> were illuminated
>
> My question is: could this be symptomatic of a dead battery/erased 
> memory requiring a new set of batteries and MIDI sysex dump, or 
> something much more complicated?
>
> If anyone has any advise OR just wants to buy this broken synth from 
> me to fix it themselves contact me.
>
> Thanks,
> Chris
>