As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED SMOKING VIDEO MONITOR AT SEAT 17AB SHORTLY AFTER TAKEOFF. RETURNED TO LAX AND LANDED WITHOUT INCIDENT. FOUND A SHORTED POWER SUPPLY UNIT AT THE MONITOR. REPLACED POWER SUPPLY AND VIDEO MONITOR AT ROW 17AB. SYSTEM GROUND CHECKED NORMAL OPERATION.