What was found
PROBLEM DESCRIPTION: NO GREEN INDICATION OF NOSE LANDING GEAR WHEN EXTENDED IN BNA, FOLLOWED LANDING GEAR ALTERNATE EXTENSION CHECKLIST, DECIDED TO DIVERT TO CVG, DURING APPROACH IN CVG FOUND CB (AIR/GROUND) RELAY POPPED. AFTER RUNNING CHECK LIST CREW WAS ABLE TO GET ALL 3 GREEN LIGHTS. CORRECTIVE ACTION & OTHER PERTINENT INFORMATION: RESET CIRCUIT BREAKER, CLEANED NOSE LANDING GEAR SENSORS, PERFORMED NOSE LANDING GEAR SAFETY SENSOR TEST, NO DEFECTS NOTED. CYCLED GEAR HANDLE UNABLE TO DUPLICATE CHECKS GOOD IAW B737AMM 32-09-02 .