What was found
PRIOR TO 80 KTS. ANTI-SKID LIGHT CAME ON. NOTE: REJECTED TAKEOFF AT KMIA. CHECKED ELECTRICAL SYSTEM IAW MM 32-3-0 SMT 1 & 2 FOUND SYSTEM WORKED NORMAL. REMOVED AND REPLACED LAMP CONTROL BOX IAW MM 32-43-7; PENDING OPERATIONAL CONTROL CHECK. ALSO REMOVED AND REPLACED R.A.O. ANTISKID SYSTEM DUAL SERVO VALVE IAW MM 32-43-3. LEAK CHECKED, NO LEAK NOTED. PERFORMED OPS CHECK ANTISKID SYSTEM IAW MM 32-43-0. FOUND ALL NORMAL. PERFORM TAXI AT 70 KTS. NO LIGHT ANTISKID OPERATIONAL NORMAL IAW 32-43-0.