All, I have after some inactivity realized that most of the keys on my PCR-50 are dead. I'm guessing it's due to the contact pads oxidizing. I have carefully pried the rubber bellows off of the PCB, and I assume the reason the two contact points inside the bellows are at different depths are to capture velocity data. (Please see http://www.ohrberg.org/PCR50/ for detail pictures) How would I get my keys back? I have tried alcohol and scrubbing the contact points (both on the PCB and the bellows), but to no avail. Do I need to sand the contacts down a bit to get rid of oxidation? The pattern of live/dead keys does not (to me) support the notion of a bad line on the PCB. Any help greatly appreciated! /Mick
