As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) BURNING SMELL NOTICED IN FORWARD CABIN AFTER DEPARTURE. CREW ELECTED TO RETURN TO AIRPORT. ON ARRIVAL, MTX NOTICED CEILING LIGHTING NOT WORKING AT ROW 2DEF FOUND CONNECTOR ON LIGHTING FIXTURE HAD ARCED/BURNED AND EMITTED STRONG ODOUR. FIXTURE REMOVED, INCLUDING BALLAST (PN 05939-3, SN 4515