As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CMH - FL 868 - AFTER DEPARTURE FROM CMH, NR 2 AND NR 3 TRANSFORMER RECEIVER UNITS FAILED. FLIGHT RETURNED TO CMH AND LANDED WITH NO FURTHER INCIDENT. MAINTENANCE FOUND A LOOSE ENGINE GENERATOR FEED HARNESS WIRE. WIRE 'S' WAS LOOSE AT THE NR 2 GENERATOR. SECURED WIRE IN TO TERMINAL. (M)