I repaired my Polaris membrane ribbons by cutting the damaged parts
off and carefully using a solvent(flux remover)to dissolve the
painted green insulation and rebuilding a new termination to plug
into the socket. One was far too short so I removed the termination
socket from the PCB and after connection, glued it to the metal
front panel for stability. I then soldered #22 wires to the
connector that run to the PCB where the old connector was mounted.
It is working well now. For awile I was thinking I might do that to
all of the connections as the ribbons are prone to cracking where
they loop to plug into the termination sockets. Anyway that's my 2
cents!
Lou


--- In chromapolaris@yahoogroups.com, "greg rudd" <compactor24@...>
wrote:

>
> 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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