As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 4085, DURING MAINTENANCE INSPECTION, NUMEROUS EMERGENCY LIGHTS FAILED TO ILLUMINATE. MAINTENANCE REMOVED AND REPLACED AN EMERGENCY LIGHT INVERTER, OPERATIONALLY TESTED WITH NO DEFECTS NOTED AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.