As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDT- STRONG SMELL OF BURNED WIRES IN AFT OF CABIN AND IN CARGO AREA. NO VISIBLE SMOKE PRESENT. WHEN GROUND FAN TURNED OFF, SMELL SEEMED TO SUBSIDE. FOUND OVERHEAD LIGHT ASSEMBLY AT ROW 9AB SMOKING. REMOVED AND REPLACED LIGHT ASSEMBLY. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.