As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE SMELL DETECTED IN THE COCKPIT WHILE EN ROUTE. SMOKE IDENT AND REMOVAL CHECKLIST IN THE POM WAS INITIATED. PART WAY THROUGH CHECKLIST SMOKE WAS VISUALLY DETECTED COMING FROM THE CAPTAINS WINDSHIELD HEAT SENSOR. LEFT WINDOW HEAT C/B'S WERE TRIPPED AND THE SMOKE ILLUMINATED. FOUND HEATER TEMINAL NR 2 ON CAPTS W/S BURNT. REPLACED TERMINAL BLOCK, CAPTS W/S, AND LT W/S HEAT CONTROLLER. OPS CKS OK.