As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOOR 3L EMERGENCY LIGHT POWER SUPPLY M33405 BATTERY OUTPUT FAILE D - ORIGINATED BY EMP V905307 ON HAECO NR 9460336, SPEC NO.B777- 33-3-7019. PERFORMED BY EMP V905450, DOOR 3L EMERGENCY LIGHT POWER SUPPLY M 33405 BATTERY PACK REPLACED, INSTALLATION TEST PERFORMED FOUND N ORMAL, REF TO AMM 33-51-06-960-802 REV 93.