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Need advice: disassembling/cleaning a Roland keyboard's key contacts
Old 31st December 2010
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Need advice: disassembling/cleaning a Roland keyboard's key contacts

I've searched but found no answers to my specific question, I am somewhat experienced in DIY stuff like this but could use some advice from anyone who's been down this road before. I have an Edirol PCR-M80 keyboard with an unusual problem that I'm guessing is related to a dirty or malfunctioning contact: a particular key will sometimes "retrigger" on its own after I release it, at full velocity! This used to happen very randomly, however the last two nights I had gigs and it happened on each of them. So it's getting worse.

The contacts are probably due for a cleaning but what I'm worried about is opening them up. It looks like the rubber strips are held to the PCB with double-sided tape or some other kind of adhesive. To get to the innards I'll need to peel the rubber membrane off, and that has me worried that I won't be able to get it back on like it was. Here's a pic (sorry about this, you're looking at 4 years of accumulated crud!!):

I think I'll be fine in terms of the actual cleaning, or even replacing the carbon pads if need be (there's good info on this online), it's just the peeling off and re-attachment of the membrane strip that I'm not sure about. TIA for any hints!!
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