As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OWNER COMPLAINED OF OVERVOLTAGE. FOUND REGULATOR HAD BEEN REMOVED FROM SYSTEM. ALTERNATOR RECENTLY REPLACED. OLD ALTERNATOR MAY HAVE BEEN AUTOMOTIVE WITH INTERNAL REGULATOR. PREVIOUS OWNER PERFORMED MUCH OF THE MAINTENANCE. SUGGEST VERIFYING AIRCRAFT, COMPLETE CHARGING SYSTEM WHEN REPLACING COMPONENTS.