As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERTED TO CVG DUE TO ELECTRICAL/SMOLDERING ODOR IN CABIN FROM ROW 16 AFT, NO VISUAL SMOKE REPORTED. MAINTENANCE INSPECTED CABIN AND GALLEYS. FOUND LIGHT BALLAST ABOVE 16 ABC, TO BE BAD AND REPLACED IT. ACCOMPLISHED DUCT BURNOUT PER OPN 5089. NO CONTAMINATION OF APU INLET AREA NOTED.