Rhodes Chroma Polaris

while im not the big pro.... this does sound like what could happen with dirty key contacts... they are fairly easily cleanable,and you dont have to be anykind of electrical engineer to do it. but it  a bit slow and methodical to do all the keys.  I have rescued a couple synths being virtually discarded as unplayable by just using the alchohol and q tip method . then the keys work fine.... one i had to do twice because one note stayed iffy after the first go round. It seems like a big deal cause the key doesnt play but its not like dead chips....




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From: ricardorucier <ricardorucier@...>
To: chromapolaris@yahoogroups.com
Sent: Friday, November 14, 2008 7:13:25 PM
Subject: [chromapolaris] Notes randomly not playing ( EVEN WITH MIDI )


Hi Guys,

This problem happened before, about a year ago. 

One of the keys weren't working, and I thought it was just out.
Then I opened the top panel regarding another issue, and closed the
panel, and then the key started working again, keep in mind, I didn't
touch the key. I just assumed it was a fluke.

A few years go by, and now, certain keys randomly don't play, then
they play, then another one doesn't play. I'm looking for a pattern,
but I'm not aware of the issue. 

For instance, if C1 key goes out for a second, I'll press C2, and C2
plays just fine, so it's not a voice thing? Wouldn't that effect all
of the octaves. The all of a sudden, C1 works fine for a while, then
it's G1, and G2 is fine.

Does cleaning the contacts effect if the MIDI signal triggers the
sound or not, or is it just internal?

If so, how do I go about cleaning the contacts, if not, how do I go
about fixing this DIY?

Thanks