What was found
JUST PRIOR TO TOP OF DESCENT FROM CRUISE FLIGHT, RIGHT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. RAN QRH SELECTED WINDOW OVERHEAT TO OFF, AND SELECTED BACK TO ON AFTER 5 MINTUES AND OVERHEAT LIGHT ILLUMINATED AGAIN. SWITCH TURNED OFF FOR REMAINDER OF FLIGHT. GROUNDED - YES. C393 C/B ON P6-11 FOUND OUT, RESET PER AMM 20-60-01 & WDM 30-41-12. RESISTANCE CKS SENSORS & HEAT FILM WITH IN LIMITS REF AMM 30-41-21. DUE TO NATURE OF WRITE-UP & RECENT HISTORY, REMOVED & REPLACED M320 WINDOW HEAT CONTROL UNIT RIGHT SIDE REF AMM 30-41-11. 2 C/B OPEN & CLOSED, OPS CKS PASS.