As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT CRUISE ALTITUDE, THE CREW REPORTED A BURNING PLASTIC SMELL IN THE AREA OF SEAT 2A (GALLEY AREA). UPON INSPECTION BY MAINTENANCE, THE LIGHT BALLAST WAS FOUND TO BE OVERHEATING. MAINTENANCE REMOVED POWER TO THE LIGHT ASSEMBLY AND DEFERRED THE LIGHT BALLAST AS PER THE NEF PROGRAM.