As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT LT WINDSHIELD HEAT INOP CAS CAME ON FOLLOWED BY A STRONG ACRID HOT ELECTRICAL ODOR. LT WINDSHIELD HEAT SWITCH WAS SELECTED OFF AND ODOR DISAPATED. REMOVED & REPLACED LT WINDSHIELD ANTI-ICE CONTROLLER AND C/W FULL SYSTEM OPS TEST. ALL CK'S GOOD IAW MM 30-41-00