As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH INTO BOS, FLIGHT ATTENDANT NOTICED SMOKE FROM CABIN LIGHT ABOVE SEAT 2H AND 2J. NOTIFIED COCKPIT AND SHUT LIGHTS OFF. SMOKE DISSIPATED. CAPTAIN DECLARED A PRECAUTIONARY EMERGENCY AND FLIGHT LANDED WITHOUT INCIDENT. REPLACED BALLAST ON LIGHT 2H AND 2J. OPERATIONAL CHECK OK.