As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT MX - ONT - SERVICE & ROUTINE CHECK - DURING PRELIMINARY INSPECTION EXIT SIGN AT SEAT ROW 3A WAS FOUND INOP. MX PERSONNEL REMOVED AND INSTALLED NR 3 INVERTER IAW EMB 145 AMM 33-50-00. OPERATIONALLY CHECKED GOOD AND AIRCRAFT WAS RELEASED TO RETURN FOR SERVICE IN AIRWORTHY CONDITIONS.