As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKE-OFF, NUMBER 2 GENERATOR FAILED. TAKE-OFF ABORTED AND AIRCRAFT RETURNED TO GATE. SWAPPED NUMBER 2 GENERATOR CONTROL UNIT (GCU) WITH APU GCU AND CONFIRMED FAILURE. INOPERATIVE GCU WAS DEFERRED IN ACCORDANCE WITH MEL. GCU WAS FUNCTIONALLY TESTED IN ACCORDANCE WITH THE AIRCRAFT MAINTENANCE MANUAL. ALL SYSTEMS AND INDICATIONS OPERATED NORMAL. NO FURTHER DISCREPANCIES NOTES. DEFERRAL WAS CLEARED AND PLACARD WAS REMOVED. NO FURTHER ACTION REQUIRED.