What was found
AIRCRAFT RETURNED TO PLATFORM DURING TAXING, AFTER AUTO BRAKES WERE ARMED TO TAKEOFF, ALL THE ANTISKID LIGHTS TURNED ON AND THE CIRCUIT BREAKERS POPPED OUT. TECH REMOVED AND INSTALLED THE AUTO BRAKE BOX AND DURING BRAKE VALVES CHECK WAS DETECTED THAT WHEN THE LT EXTERNAL VALVE WAS DISCONNECTED THE EXTERNAL THE LIGHT TURNED ON. LT DUAL SERVO VALVE WAS REPLACED IAW MM 32-43-03, TESTED CORRECT. AIRCRAFT WAS SENT FERRY IAW MGM 4-14-1 WITH ANTI-SKID SYSTEM INOPERATIVE. WIRING WAS CHECKED FROM ANTI-SKID CONTROL TO CONTROL VALVE IAW WDM 32-41-00 AND TESTS WERE PERFORMED IAW MM 32-43-00, ALL CORRECT.