As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH- MAINTENANCE, WHILE PERFORMING A LINE CHECK MAINTENANCE NOTED THAT THE CABIN EMERGENCY FLOOR LIGHTS FAILED TO ILLUMINATE DURING TEST. IAH- MAINTENANCE REMOVED AND REPLACED THE LEFT HAND FORWARD POWER SUPPLY NUMBER 2. PERFORMED A OPERATIONAL CHECK, NO DEFECTS NOTED AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.