As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE HAD SMOKE IN THE MID CABIN CEILING. IT WAS AN ELECTRICAL SMELL THAT COULD HAVE BEEN FROM THE LT BALLASTS. MTC DEACTIVATED THE CABIN LTS AND FWD TO MCO. SEVERAL OF THE CEILING LTS WERE FOUND INOP. THE SMOKE HAD DISSIPATED WHEN THE A/C WAS IN DESCENT. BURNED OUT LIGHTS WERE REPLACED AND A INSPECTION OF THE LIGHTING SYSTEM WAS DONE, NO DISCREPANCIES WERE FOUND.