As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH MAIN BATTERIES OFF EMERGENCY EXIT LIGHT ABOVE GALLEY AT MAIN ENTRANCE IS INOPERATIVE. LIGHT ILLUMINATES WHEN BATTERIES TURNED ON. DUE TO INTERNAL FAILURE REMOVED & REPLACED #1 EMERGENCY LIGHTING BATTERY PN CBS28-1 SN 0391M WITH REPAIRED PN CBS28-1 SN 008693 IAW AMM 33-50-10.