As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN LANDING GEAR SELECTED DOWN, THE LANDING GEAR CONTROL CIRCUIT BREAKER TRIPPED. DUPLICATED ON JACKS. WHEN GEAR DOWN SELECTED, THE HYD PRESSURE TO THE DOWN SOLENOID RESISTANCE GOES HIGH AND AMPS EXCEEDS THE RATED 5 AMP CIRCUIT BREAKER. REPLACED THE -15 CONTROL VALVE WITH THE PERFERRED -19 AND OPS CHECKED GOOD.