As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING THE FLIGHT THE HEADPHONE JACK AT SEAT 23E BECAME VERY HOT AND PRODUCED A BURNING ODOR. THE IFE ANS ISPS SYSTEMS WERE TURNED OFF AND THE JACK COOLED AND THE ODOR DISSIPATED. FOUND CONNECTOR UNDER 22 DEF ADRIFT, BENT PINS. REPAIRED PINS, RECONNECTED 22-23 DEF. REPLACED SVDU 23 E. CHECKED SERVICE.