What was found
ON APPROACH, CREW NOTICED THERE WAS NO GEAR DOWN AND LOCKED INDICATION ON ANY OF THE GEAR INDICATORS. CREW DID A GO AROUND AND WAS INFORMED BY ATC THAT THE GEAR APPEARED TO BE DOWN. CREW WENT INTO A HOLD AND PERFORMED AFM GEAR CHECK LIST. AFTER GEAR WAS BLOWN AND CIRCUIT BREAKER WAS RESET, THE GEAR INDICATION WAS NORMAL. THE ACFT LANDED UNEVENTFULLY. ON SITE MX REPLACED THE GEAR PC BOARD, AND PERFORMED A LANDING GEAR RETRACTION TEST . THE GEAR WAS RETRACTED AND EXTENDED NUMEROUS TIMES AND NO DISCREPANCIES WERE NOTED. CREW PERFORMED A SATISFACTORY OPERATIONAL CHECK FLIGHT AND THE ACFT WAS RETURNED TO SERVICE.