As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ALTERNATOR FIELD C/B TRIPPED WHEN ALTERNATOR TURNED ON. ZERO VOLTS FOUND AT ALT FIELD TERMINAL. REPLACED ALTERNATOR CONTROL RELAY, NO CHANGE. REPLACED ALTERNATOR CONTROL UNIT, VOLTAGE AT FIELD TERMINAL OF ALTERNATOR. ALTERNATOR FUNCTIONING NORMALLY DURING GROUND RUNUP.