As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GNDED. ELEC BURNING SMELL ONLY NOT SMOKE. OVERWING LT SIDE OF ACFT IN CRUISE. CREW INSTRUCTED FLIGHT ATTENDANTS TO TURN OFF POWER TO THE POWER PORTS AND SMELL DISSIPATED. MAINTENANCE INSPECTED POWER PORTS FOR DEFECTS AND DAMAGE PER TSM 25-21-00-201-00 AND FOUND NO DEFECTS. NO EVIDENCE OF SMELL IN CABIN WITH SYSTEM TURNED ON.