As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOWER RH EXIT IDENTIFIER SIGN AT ROW 18 INOPERATIVE. REMOVED AND REPLACED EXIT SIGN. OPS CHECK FAILED. RETURNED TO ORIGINAL CONFIGURATION. FOUND THAT INVERTER ASSEMBLY, BATTERY ASSEMBLY AND BATTERY CHARGER ASSEMBLY WERE FAULTY. REMOVED AND REPLACED. OPS CHECK SAT.