As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAIN SAW AN ARC EMANATE FROM HIS WINDSHIELD AFTER WINDOW HEAT WAS OPERATIVE FOR SEVERAL MINUTES. MEL PROCEDURE WAS APPLIED AND THE FLIGHT CONTINUED TO DSM WITHOUT FURTHER INCIDENT. MAINTENANCE REPAIRED WIRES TO TERMINAL ENDS OF CAPTAIN'S ANTI-FOG THERMAL SWITCH WITH HEAT SHRINK IAW CH 20-20-01. OPS GOOD. THE AIRCRAFT WAS NOT GROUNDED.