As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRIOR TO DEPARTURE, FLIGHT CREW OBSERVED SMOKE IN CABIN BETWEEN SEAT ROWS 13 AND 18. MAINTENANCE DEACTIVATED THE RECIRCULATION FAN AND PLACED SYSTEM ON MEL 21-31, COND. 1 (RECIRC FAN INOP). AIRCRAFT WAS MAINTENANCE FERRIED BACK TO PHX WHERE MAINTENANCE DISCOVERED TWO EACH CABIN FLORESCENT LIGHTS (SEAT ROW 15-18) BURNED AT THE CONNECTOR. REMOVED AND REPLACED LAMP HOLDER ASSEMBLY AND BULBS AT SEAT ROW 15, OPERATIONAL CHECK WAS GOOD.