What was found
WINDSHIELD ANTI-ICE OVERHEATED IN FLIGHT AT -14 C RAT. BURNING ODOR IS ALSO ACCOMPANYING THE WINDSHIELD OVERHEAT LIGHT & MASTER CAUTION. DURING TESTING AND TROUBLESHOOTING FOUND TEMP CONTROLLER NOT MODULATING AT CORRECT TEMPERATURES. REMOVED AND REPLACED TEMPERATURE CONTROLLER IAW AMM 30-41-02. REMOVED AND REPLACED TEMPERATURE SENSOR IAW AMM 30-41-02. REMOVED & REPLACED TEMPERATURE BULB IAW AMM 30-41-02. COMPLIED WITH FINAL OPERATIONAL CHECK AND TEMP CONTROLLER IS OPERATING GOOD WITH MODULATING RAM AIR CORRECTLY DURING ENGINE RUN. WORK DONE IAW MM 30-41-00, MM 30-41-02 MM 30-41-03.