As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: ESCAPE PATH LIGHTS EXIT LIGHTS ON LEFT ON RIGHT SEATS ARE INOPERATIVE FROM ROWS 26 ON BACK. REPLACED AND SATISFACTORY TEST PORWER SUPPLY M33401 ABOVE DOOR 3 AS REF-B777 WDM 33-51-58 AND B777 AMM 33-51-06-960-803.