As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT TRANSFORMER RECTIFIER UNIT FAILED WHEN ON RUNWAY AND RETURNED TO GATE. CREW GROUND RAN AIRCRAFT, PERFORMED TRUE OPS CHECK AND ALTERNATING CURRENT. VARIABLE FREQUENCY GENERATION SYSTEM OPS CHECK. ALL SYSTEMS OPERATE NORMALLY IN ACCORDANCE WITH THE PROCEDURES.