What was found
FLIGHT CREW PERSONNEL REPORTED ON THE GROUND AT STATION TOL, SMOKE AND FUMES COMING OUT OF OVERHEAD SEAT ROW 31 AND 30 A AND C. CONTRACT MAINTENANCE PERSONNEL ACCESSED CEILING LIGHT BALLAST IAW 33-21-03 AND DISCONNECTED CONNECTOR. CONFIRMED BAD BALLAST. DEFERRED CEILING LIGHT BALLAST IAW MWL 33-02 SIT 1. DMI 258080, M PROCEDURE COMPLIED WITH, INOP, PLACARD INSTALLED. ALLEGIANT MAINTENANCE PERSONNEL REMOVED AND REPLACED CEILING LIGHT BALLAST IAW AMM 33-21-03, OPS CHECK GOOD. CLEARED DMI AND RETURNED AIRCRAFT TO SERVICE.