Rhodes Chroma Polaris

Alex,

It sounds like paul is your "go to guy" on the Polaris electronics. I put 
mine together by following the existing switch circuit as shown on the 
original membrane panels, I don't have the depth of electronic knowledge to 
have known how the matrix works. Then i drilled the holes installed the 
switches and connected the dots. Jason reccomended the switches which i 
accessed on Ebay for very low cost. I'll find you the link to the 
manufacturer.
If anything isn't right with that matrix expect problems. I had one shorted 
switch and nothing worked until I metered out all the switches and found the 
problem. Now it all works fine. I never did like those membrane switches 
even when they worked. Not responsive or tactile enough.




>From: alex459686 <no_reply@yahoogroups.com>
>Reply-To: chromapolaris@yahoogroups.com
>To: chromapolaris@yahoogroups.com
>Subject: [chromapolaris] Re: any advice on rebuilding the front panel 
>needed .
>Date: Thu, 10 May 2007 01:32:45 -0000
>
>
>many many thanks for the advice Paul .
>I will research, and brush up on my electronics know-how before attempting 
>this .
>
>For anyone with good internal Polaris know-how and free time....::::
>The Issue my Polaris is having right now, is that when it is switched on 
>the vast majority of
>panel lights are "lit", buttons "7" , "8" and "9" seem to work but they 
>have the response of
>changing "assignable control" light (of which only one is ever alight) and 
>also the
>"envelope" and "volume envelope" lights . This is very odd, i have 
>previously experienced a
>damaged ribbon which i , at first , successfully repaired . but now seems 
>damaged again .
>another odd trait of my current Polaris problem is that by pressing 7,8 or 
>9 the sound is
>changed, though as i play the keyboard the sound suddenly changes 
>erratically . im
>assuming due to the computer receiving confusing messages from the panel . 
>The sliders
>then have no effect on the sound of the instrument .
>I am assuming that there is some kind of problem with the Ribbon, as this 
>is a repeating
>problem for me . and due to this problem most of the switches are active . 
>causing the
>instrument to become "confused" and not respond to the slider changes .
>does anyone have any idea what connection/cable break or ribbon damage may 
>cause a
>response like this . In reference to the schematics  how would it be 
>possible for all the
>right panel lights to be in there "on" state at the same time ?
>sigh!...ok . i hope i didnt explain that too confusingly . . if anyone 
>could help shed any
>light on this problem id be thankful .
>
>thanks again for the previous info .
>long live the polaris group ;)
>
>

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