What was found
IAH - FLIGHT 2852, THE CREW REPORTED A W/S 1 FAIL MESSAGE ON EICAS FOLLOWED BY LOUD CLICKING OF RELAYS AND A STRONG BURNED ELECTRICAL ODOR. THE AIRCRAFT LANDED AT IAH WITHOUT INCIDENT WHERE MAINTENANCE INSPECTED THE AIRCRAFT AND PLACED THE WINDSHIELD HEAT ON MEL 30-42-02 CAT C CTL#124320, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. THE AIRCRAFT RETURNED TO 06/28/07, WHERE MAINTENANCE SWAPPED THE SENSORS WIRES TO S3 AND S4. OPERATIONALLY CHECKED THE WINDSHIELD HEAT SYSTEM WITH NO DEFECTS. REMOVED THE MEL, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.