As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, MAIN CABIN AUDIO AND READING LIGHTS WENT INOP. SPARKS AND SMOKE IN FIRST ROW OF COACH CLASS. HKG MAINTENANCE FOUND SEAT CABLE FROM 24HJK TO SIDEWALL BURNED AND ZONE C/D SERVICE TO C/B POPPED. JFK MAINTENANCE REMOVED AND REPLACED SEAT CABLE AND WALL CABLE. OPERATIONAL CHECKS GOOD.