As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HEAVY ELECTRICAL SMELL IN ROWS 43-45 CO-PILOTS SIDE. TURNED OFF PASSENGER ENTERTAINMENT SYSTEM, SMELL WENT AWAY. TURNED ON PASSENGER ENTERTAINMENT SYSTEM. NO SMELL PRESENT. INSPECTED PSU'S AND BALLASTS FROM ADJACENT SIDEWALL LIGHTS. NO TROUBLE/SMELL FOUND. A/C OK FOR SERVICE.