As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLT DECK L2 WINDOW OVERHEAT RAN QRH PROC L2 WINDOW WAS STILL OVERHEATED AFTER SWITCH WAS OFF FOR 5 MIN TURNED OFF L2 WINDSHIELD HEAT PER QRH. GROUNDED - YES. WHCU BITE GOOD. PREV FLTS SHOWED WINDOW POWER AND P5-9/CTRL POWER FAULTS. WINDOW HEAT OPS CHECK GOOD REF AMM 30-41-11. MEL 30-11E CLEARED.