As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGER REPORTED THAT THE AFT VIDEO MONITOR EMITTED A MOMENTARY PUFF OF SMOKE AND THEN BLANKED OUT. THE CREW SECURED THE VIDEO SYSTEM. MAINTENANCE COULD NOT DUPLICATE THE PROBLEM. THE VIDEO SYSTEM AND MONITOR WERE OPERATED FOR APPROXIMATELY FORTY-FIVE MINUTES WITH NO DISCREPANCIES NOTED. THE MONITOR WAS REPLACED AS A PRECAUTION.