As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW REPORTED READING LIGHTS IN ROW 27 D- E- F PRODUCE SMOKE WHEN TURNED ON. MAINTENANCE PERSONNEL INSPECTED AND FOUND UPPER SIDEWALL LIGHT BALLAST AND UPPER LIGHTS INOP. REMOVED AND REPLACED BALLAST IAW AMM 33-21-03, OPS CHECK GOOD. READING LIGHTS OPS CHECK GOOD. NO OTHER DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.