What was found
DURING DESCENT, THE LANDING GEAR CONTROL CIRCUIT BREAKER POPPED AND WOULD NOT RESET, UNABLE TO EXTEND LANDING GEAR. CREW REFERRED TO QRH, EMERGENCY LANDING GEAR EXTENTION USED. AIRCRAFT LANDING WITHOUT INCIDENT. MAINTENANCE REPLACED THE LANDING GEAR CONTROL PANEL, SEPARATION BOLTS AND JACKS. CHECKS GOOD AT THIS TIME.