What was found
AT POWER UP PRIOR TO TAKE OFF ANTISKID LIGHT ILLUMINATED. THE POWER BRAKE CB POPPED. RETURNED TO RAMP. POWER BRAKE HAD BLED DOWN SUFFICIENTLY AND PNUEMATIC BRAKES WERE USED TWICE TO STOP AND PARK AIRCRAFT. OPS CHECKED BRAKES REPEATEDLY & NO PROBLEM NOTED (INITIALLY). CHECKED CIRCUIT BREAKER FOR SECURITY AND CONTINUITY. PERFORMED COMPLETE BRAKE BLEEDING PROCEDURE. INVESTIGATED AND FOUND CONTACTS OF PUMP RELAY SEVERELY PITTED & ERODED (HIGH CURRENT DRAW). R & R PUMP RELAY. OPS CHECKED GOOD. WORK DONE IAW THE MM 32-42-00.