Emu XL-7 & MP-7 User's Group

They're really small microswitches.  I'm not sure there's anything you could do other than desolder the offending ones and replace them.  The button caps (the black pieces you see) are not the switch themselves, they're simply a cover that snaps onto the little switch which is a sealed thing about 2mm square.

Maybe someone better than me with hardware might know what you can do with those microswitches...

-Aaron

PS. here's the best I could find on google for a pic.  the ones we use have a post to attach the black button instead of the red disk.
http://roleepolee.com/products/roleepolee/microswitch6167a.jpg

----- Original Message ----
From: gutman75 <bgutman@...>
To: xl7@yahoogroups.com
Sent: Wednesday, May 21, 2008 7:25:41 AM
Subject: [xl7] Fixing buttons - DIY

Hi all,

I have an MP-7 on which several buttons have stopped working (the 
most used ones are Save and trigger #6 - because it's direct access 
to the filters in patch edit mode). I thought of taking it to service 
center, but since it's in another city, I never have the time to go 
there; besides, being E-Mu official service, they probably charge a 
fortune. I'd never venture to open the device myself, but Aaron 
mentioned in a recent post that it should be possible to take out the 
buttons without taking the case apart. This got my hopes up that I 
might be able to fix the buttons myself, but first I'd like to ask 
for advice from this fine community. Assuming I manage to take the 
buttons out, how do I clean the contacts? Is there anything to clean 
at all? I mean, if the contacts must be replaced anyway, service 
center is my only option.

thanks in advance!
Boris.