As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD CARGO COMPARTMENT FIRE EXTINGUISHER ARMED SWITCH FOUND DAMAGED AND BURNED FROM ELECTRICAL ARCING, CAUSING FAN CONTROL FWD CARGO AND LEFT RECIRC FAN CONTROL CIRCUIT BREAKERS TO TRIP. REMOVED AND REPLACED THE APU/CARGO FIRE CONTROL PANEL M10444