As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE MAINTENANCE CHECK, FOUND THE CEILING MOUNTED OVERWING EMERGENCY EXIT LIGHT INOP. INSTALLED NEW TERMINALS FOR LIGHT ASSEMBLY. REMOVED AND REPLACED FWD LIGHT ASSEMBLY. REMOVED AND REPLACED BATTERY PACK. RELAMPED LIGHTS, OPS CHECK GOOD. STC - BOEING STANDARD BATTERY PACK 831862 DISCHARGED CABIN.