What was found
DURING DESCENT ON FLIGHT 3356 AFTER PLACING RT ENGINE ANTI-ICE SWITCH ON RT INTAKE LIGHT ILLUMINATED. RECYCLED AS PER ORH AND LIGHT ILLUMINATED AGAIN. RT INTAKE LIGHT REMAINED ON FOR APPROXIMATELY 5 MINUTES THEN WENT OUT. MAINTENANCE SWAPPED THERMISTORS IN DE-ICE CONTROL AND RESECURED GROUND WIRE. GROUND RAN A/C 45 MINUTES IAW SF340 AMM. OPS CHECK GOOD ON RT ENGINE ANTI-ICE SYSTEM.