As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, TRIED TO PUT THE LANDING GEAR UP HAD TO USE THE DOWN LOCK RELEASE BUTTON TO GET HANDLE UP, GEAR CIRCUIT BREAKER POPPED. RAN QRH RETURNED GEAR HANDLE TO THE DOWN POSITION. RETURNED TO DEPARTURE LANDED WITHOUT INCIDENT. TROUBLESHOT LANDING GEAR WIRING FOR RETRACTION AND EXTENSION SYS. REPLACED LANDING GEAR HANDLE. OPS CHECK GOOD.