As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURIN POSTFLIGHT INSPECTION THE TECH NOTICED TWO CIRCUIT BREAKERS TRIPPED. MAU3B PRIMARY AND MAU3B SECONDARY. TECH RESET THE CIRCUIT BREAKERS AND APPROXIMATELY 10 SECONDS LATER NOTICED A HOT ELECTRICAL ODOR AND SAW A SMOKE HAZE COMING FROM THE LT ELECTRONIC EQUIPMENT RACK. CIRCUIT BREAKER DID NOT TRIP AGAIN. DURING INSPECTION, POWER SUPPLY WAS FOUND SCORCHED AND HAD SEVERAL COMPONENTS COMPLETELY BURNED OFF. REPLACED WITH A SERVICEABLE AND SYSTEM FUNCTIONAL TESTED AND RETURNED TO SERVICE.