As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 3508 - PIT - CREW REPORTED THAT WHILE PASSING THROUGH 100FL, CLICKING WAS HEARD FOLLOWED BY THE NR 1 AVIONICS MASTER SWITCH BUTTON POPPED OUT. MAINTENANCE CLEANED THE NR 1 AVIONICS SWITCH AND SYSTEM OPS CHECKED GOOD AS PER EMB145 AMM 24-62-00.