What was found
ON FLIGHT 3243 CREW REPORTED RELAYS CLICKING BEHIND CAPTAINS SEAT HAD LIGHT ELECTRICAL ODOR OBSERVED FUEL AND ELECTRICAL PAGE WHILE CLICKING DID NOT NOTICE ANYTHING COMING ON OR OFF. AIRCRAFT REMOVED FROM SERVICE. PERFORMED LT AND RT RELAYS VISUAL INSPECTION, INSPECTED FWD AVIONICS COMPARTMENT. PERFORMED OPERATIONAL CHECK OF MAIN CIRCUIT SWITCHING UNIT IAW AMM 24-31-00. ALL OPERATIONAL CHECK NORMAL AT THIS TIME. CND. NO ELECTRICAL ODOR NOTED. AIRCRAFT RETURNED TO SERVICE.