As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TROUBLESHOOTING OF ANOTHER EMERGENCY LIGHT ISSUE ROW 38 EMERGENCY ESCAPE PATH LIGHTING AND THE EXIT SIGN AT DOOR 4 RIGHT WOULD NOT ILLUMINATE. MAINTENANCE FOUND POWER SUPPLY M736 TO BE DEFECTIVE AND REPLACED IT. SYSTEM OPERATION WAS NORMAL AFTER IT WAS REPLACED.