What was found
IAH - FLIGHT 2072, THE CREW REPORTED A WINDSHIELD 1 HEAT FAIL MESSAGE FOLLOWED BY A SMELL ON DEPARTURE. THE AIRCRAFT LANDED AT IAH WITHOUT INCIDENT WHERE MAINTENANCE REMOVED AND REPLACED THE NR 1 WINDSHIELD HEAT CONTROLLER, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.