As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELECTRICAL SMOKE IN AREA OF SEAT 22A, AT THE TIME WHEN SMOKE APPEARED THE CABIN AUDIO AND VIDEO SYSTEM FALTERED WITH STATIC AND LOSS OF VIDEO INPUT. REPLACED SEAT ELECTRONIC BOX AT 22ABC AND WALL DISCONNECT BOX AND WALL TO SEAT BOX HARNESS.