What was found
MOB- AFTER TAKEOFF OF FLIGHT 3911 DURING CLIMB, AT 10,000 FEET THE CREW RECEIVED PITOT 2 FAIL MESSAGE, ALONG WITH ELECTRIC SMOKE IN THE COCKPIT. THE AIRCRAFT RETURNED TO MOB, LANDED WITHOUT INCIDENT. MOB- MAINTENANCE TROUBLESHOT THE NUMBER 2 PITOT HEAT SYSTEM AND FOUND A BURNED RELAY ON THE RELAY PANEL. THE AIRCRAFT WAS RELEASED FOR FERRY FLIGHT FROM MOB TO IAH. IAH- MAINTENANCE REMOVED AND REPLACED RELAY K0054. PERFORMED A OPERATIONAL CHECK OF THE NUMBER 2 PITOT HEAT SYSTEM, NO DEFECTS NOTED. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.