As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG SMELL OF BURNING PLASTIC/ELECTRICAL IN GALLEY AREA. AIRCRAFT WAS PARKED AT GATE HAD JUST BEEN DEPLANED. MAINTENANCE FOUND A BURNED LAMP SOCKET AT OVERHEAD LIGHT LOCATED AT SEAT 1DF. BULB WAS REMOVED AND MEL PROCEDURES WERE USED. MECHANICS REPLACED BOTH LAMP HOLDERS AND REACTIVATED OVERHEAD LIGHT SYSTEM.