As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED A BURNING SMELL WHEN THE ELECTRIC WINDSHIELD WAS TURNED ON. MAINTENANCE INSPECTED AND FOUND THE STATIC INVERTER FOR THE WINDSHIELD HEAT TO HAVE A SLIGHT ELECTRICAL SMELL. THE INVERTER AND SUPPRESSOR WERE REPLACED WITH NOT ADDITIONAL DEFECTS NOTED.