For what it's worth, I had a coolie switch that wouldn't register up. Turns out, it was a broken trace, scratched by a screw when I was re-assembling after a mod. I'm like a bull in a china shop sometimes. If you're like me, look at the board near the big screws that hold the sections together and see if there's damage. Managed to reconnect the trace with a thin wire, scraping the resist back a little on each side, and some careful soldering. Used flux and a fine tip.