As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - DURING MAINTENANCE INSPECTION A BURNING SMELL WAS NOTICED AT SEAT 1A. MAINTENANCE REMOVED AND REPLACED THE LIGHTING BALLAST ABOVE SEAT 1A, OPERATIONALLY CHECKED THE LIGHTING WITH NO DEFECTS NOTED, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.