As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE TAKEOFF RUN THE NR 1 GEN OFF BUS LIGHT ILLUMINATED. THE TAKEOFF WAS ABORTED. ATTEMPTED RESET PER QRH WITH NO SUCCESS. FOUND BROKEN WIRE ON NR 1 GENERATOR. REPLACED WIRE EYELET WITH SERVICEABLE UNIT AND CONNECTED TO NR 1 GENERATOR. RAN RT ENGINE, APPLIED LOAD TO NR 1 GENERATOR AND PARALLELED GCU TO 28.50 VDC. OPS CHECK GOOD.