What was found
(CAN) AFTER TAKEOFF, L G WAS SELECTED UP AND GEAR TRAVELED MOST OF WAY UP, STOPPED WITH GEAR IN TRANSIT LIGHT STILL ILLUMINATED. MANUAL EXTEN WAS COMPLETED, AC LANDED W/O FURTHER INCIDENT. DURING INSP, DAMAGE WAS DISCOVERED ON SKIN OF LT IB GEAR DOOR, LT IB CAM ASSY, LT IB CAM SUPPT BRACKET, LT IB GEAR CAM ROLLER. PREVIOUS, FLT CONTROLLER MALFUNCTION CAUSING GEAR TO OVER TRAVEL UP DIRECTION DAMAGING /CHANGING ALIGNMENT OF CAM ASSY ON LT IB GEAR DOOR. WHEN GEAR WAS SELECTED UP, CAM NO LONGER PROPERLY LINK UP WITH ROLLER AND GEAR BENT CAM OVER INSTEAD ENGAGING IT, CLOSING DOOR, CAUSING GEAR MOTOR TO BE OVER WORKED WHICH POPPED BREAKER. CONTROLLER, MOTOR, CAM ASSY WERE REPLACED. AC RETURNED TO SERVICE.