As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURN TO FIELD DUE TO SMOKE IN CABIN. REPLACED READING LIGHT POWER SUPPLY AT SEAT 3AB, INSPECTED OVERHEAD AREA FROM 1AB THROUGH 8AB, NO EVIDENCE OF SMOKE OR FIRE. NO SMELL OF SMOKE IN CABIN DURING AIRCRAFT TAXI. ALL CABIN LIGHTS WORKS NORMAL.