As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXACT FAILURE SEQUENCE UNKNOWN. AFTER TOTAL ELECTRICAL FAILURE, MAINTENANCE FACILITY FOUND LEFT VOLTAGE REGULATOR AND REVERSE-CURRENT RELAY RUINED INTERNALLY. SUBITTER SUSPECTS VOLTAGE FLUCTUATIONS CAUSED RIGHT SYSTEM TO DROP OFF-LINE. TROUBLESHOOTING STILL IN PROGRESS AT THIS TIME.