As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOOR 3R M33404 EMERGENCY POWER SUPPLY FOUND MALFUNCTION - ORIGIN ATED BY EMP V905495 ON HAECO NR 9445924, SPEC NO.B777-33-3-7031. PERFORMD BY EMP V907737, M33404 EMERGENCY POWER SUPPLY REPLACED AND OPERATIONAL TEST CARRIED OUT FOUND NORMAL AS PER AMM 33-51-0 6-960-803 REV 92.