As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) OPERATOR REPORTED A LT WINDSHIELD HEAT FAIL. DURING A SUBSEQUENT INSPECTION OF THE WINDSHIELD TERMINAL BLOCK SOME MELTED MARKS WERE DISCOVERED ON THE PROTECTIVE COVER. SUSPECT THAT THE COVER WAS IN CLOSE PROXIMITY TO THE GROUND TERMINAL SCREW.