What was found
IAH - FLIGHT 2938 - DURING PRE-FLIGHT INSPECTION, THE CREW REPORTED A BURNING SMELL AT ROW 18. MAINTENANCE INSPECTED THE AIRCRAFT, FOUND A BAD BALLAST AT SEAT 18A. THE BALLAST WAS DISCONNECTED AND THE LIGHT PLACED ON MAL 33-20-00/1 CAT C CONTROL NUMBER 151397 AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. ON 08/03/08 MAINTENANCE REMOVED AND REPLACED THE LIGHT BALLAST FOR ROW 18, OPERATIONALLY CHECKED WITH NO DEFECTS, REMOVED THE MEL, AND THE ACFT WAS APPROVED FOR RETURN TO SERVICE. (S)