As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW ABORTED THE TAKEOFF AFTER RECEIVING A LEFT ALTERNATOR FAIL AND LEFT AC VOLT FAIL WARNING MESSAGE. AFTER EXITING THE RUNWAY AND CYCLING THE CONDITION LEVER THE MESSAGES CLEARED. THE FLIGHT CREW ATTEMPTED ANOTHER TAKEOFF AND THE MESSAGES RETURNED. THE TAKEOFF WAS ABORTED AND THE FLIGHT CREW RETURNED TO THE GATE. MAINTENANCE TROUBLESHOT THE AIRCRAFT AND REPLACED THE AC JUNCTION BOX IN ACCORDANCE WITH THE MAINTENANCE MANUAL 24-50-00. OPERATIONAL CHECKS WERE COMPLETED AND THE AIRCRAFT RETURNED TO SERVICE.