As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE PILOT REPORTED A VISIBLE PUFF OF SMOKE FROM THE OVERHEAD PANEL AREA TO MAINTENANCE. MAINTENANCE FOUND TWO WHEAT BULBS BROKEN AND POSSIBLY SHORTED TOGETHER IN DE-ICE PANEL BACK LIGHTING. NO OTHER ELECTRICAL ISSUES WERE FOUND. ALL SYSTEMS WERE FUNCTIONAL. THE BULBS WERE REPLACED AND OPERATED NORMALLY.