As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEN - FLT 7536 - DURING CLIMB-OUT, LEFT GENERATOR FAILED. PILOT RETURNED TO BASE WITH NO FURTHER INCIDENT. AFT BEARING, PN 03-6009-18, WAS FOUND TO HAVE FAILED. REMOVED AND REPLACED START/GENERATOR WITH OVERHAULED UNITS. SYSTEM OPS CHECK COMPLETED WITH NO FURTHER DEFECTS.