As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE TO DTW, PASSENGER AT SEAT 30F REPORTED SEAT FRAME HOT AND UNUSUAL SMELL. FOUND MUX CONNECTOR BOX COVER OPEN. RESEATED CONNECTORS AND CLOSED COVER. HEAT AND SMELL DISSIPATED. AIRCRAFT CONTINUED TO DTW AND LANDED WITHOUT INCIDENT. CLEARED OBSTRUCTION OF AUDIO JACKS. OPERATIONAL CHECK GOOD.