As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AN OVERNIGHT LINE CHECK THE EMERGENCY ESCAPE PATH LIGHTS AT ROWS 77 THROUGH 79 IN THE UPPER DECK WERE FOUND TO BE INOPERATIVE. MAINTENANCE FOUND POWER SUPPLY M5933 TO BE DEFECTIVE AND REPLACED IT. SYSTEM OPERATION WAS NORMAL AFTER THE POWER SUPPLY REPLACED.