What was found
FLIGHT 1759, PIT TO ATL - AFTER TAKEOFF, THE LANDING GEAR FAILED TO RETRACT. THE CREW FOLLOWED QRH PROCEDURES AND RETURNED TO PIT. MAINTENANCE, TROUBLESHOT CMC AND FOUND NOSE GEAR WEIGHT ON WHEELS SENSOR ONE BAD. REMOVED AND REPLACED CONNECTOR ON NOSE GEAR WEIGHT ON WHEELS SWITCH ONE. OPERATIONAL TEST CHECKS GOOD.