As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 737 FROM GDL TO MTY, ON TAKEOFF ROLL, NR 2 GENERATOR SHOWED UNDERVOLTAGE WITH ASSOCIATED THREE LIGHT TRIP. ABORTED TAKEOFF AND RETURNED TO GATE WITHOUT INCIDENT. DEFERRED NR 2 GENERATOR UNDER MEL 24-1. AIRCRAFT RETURNED TO SERVICE. TWO LEGS LATER IN TOL, CLEANED AND RESECURED CONNECTORS ON NR 2 LOAD CONTROLLER AND GENERATOR PROTECTION PANEL. OPS CHECK GOOD. MEL CLEARED. AIRCRAFT RETURNED TO SERVICE.