What was found
IAH FLIGHT 2637, THE CREW REPORTED A BURNING SMELL NEAR SEAT 1A. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND THE BULB SOCKET FOR BURNED. THE CABIN LIGHTING WAS PLACED ON MEL 33-20-00 CAT-C CTL NUMBER 124492, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.THE AIRCRAFT RETURNED TO IAH ON FLIGHT 3141 WHERE MAINTENANCE REMOVED AND REPLACED THE AFFECTED LIGHT ASSEMBLY, OPERAQTIONALLY CHECKED WITH NO DEFECTS, REMOVED THE MEL, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.