As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 5354 - STL-CVG - WINDSHIELD HEAT FAIL AND STRONG ELECTRICAL BURNING SMELL IN COCKPIT AND CABIN DURING CRUISE. DIVERTED TO CMH. FOUND TERMINAL NUTS ON WINDSHIELD HEAT CONTROLLER NR 1 LOOSE AND CAUSED TERMINALS TO MELT. REMOVED AND REPLACED WINDSHIELD HEAT CONTROLLER NR 1 IAW MM 30-42-01. OPS CHECK GOOD.