What was found
RIGHT FORWARD WINDSHIELD OVERHEAT LIGHT IS ILLUMINATED. FOLLOWED CHECKLIST. DOES NOT EXTINGUISH. ACFT GROUNDED. FOUND CIRCUIT BREAKER AT P18-3 C1 'WINDOW HEAT CONT - RIGHT FRONT' OPEN. GVI OF P19-3 INTERNAL NO DEFECTS NOTED. CLOSED CIRCUIT BREAKER AND ACCOMPLISHED RT FRONT M323 WHCU BITE. FAULT HISTORY, 10 LEGS, ONLY ONE OCCURRENCE OF 'P5-9/CTRL POWER. ACCOMPLISHED WINDOW HEAT SYSTEM - OPERATIONAL TEST REF AMM 30-41-00-710-801. OPS NORMAL, CIRCUIT BREAKER REMAINS CLOSED AND OVERHEAT LIGHT REMAINS OFF.