As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE FROM SEATS 12A/B. AREA VERY HOT TO THE TOUCH. PANEL MATERIAL BEGAN TO MELT. POWER REMOVED FROM SEAT ENTERTAINMENT SYSTEM. FLT ATTENDANT TURNED OFF SEAT POWER AT CACP. FLT CREW CONFIRMED POWER REMOVED FROM SEAT ENTERTAINMENT SYSTEM. REPLACED BOTH SEAT BACK CYCLER SWITCH & PCU. ALL FUNCTIONS OP CHECK NORMALLY.