What was found
ON APPROACH, UPON SELECTING THE LANDING GEAR HANDLE DOWN, THE HYDRAULIC PUMP RAN AS NORMAL BUT THE GEAR DID NOT CHANGE POSITION. THE HYDRAULIC CONTROL BREAKER F-7 WAS TRIPPED, WHEN RESET AND PROCEDURE REPEATED IT TRIPPED AGAIN. WITH BREAKER STILL TRIPPED, GEAR HANDLE WAS SELECTED DOWN THEN BREAKER F-7 WAS CLOSED AND GEAR CAME DOWN NORMALLY AND BREAKER DID NOT TRIP. MAINTENANCE REPLACED LANDING GEAR CONTROL HANDLE. SECURITY AND OPS CHECKS GOOD.