As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT ON DESCENT AN ELECTRICAL BURNING SMELL WAS PRESENT IN THE COCKPIT. THE CREW DESELECTED THE WINDSHIELD HEAT FOR BOTH WINDSHIELDS AND THE SMELL DISSIPATED. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE WINDSHIELD ONE HEAT CONTROLLER. OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.