What was found
ON TAKEOFF ROLL JUST PRIOR TO 70 KTS, NO TAKEOFF ANNUNCIATOR, WARNING HORN, AND MASTER CAUTION. EVERYTHING AS FAR AS FLAPS, SPEED BRAKES & TRIM WAS IN CORRECT POSITION FOR TAKEOFF. AFTER SHUTTING DOOR, RESTARTED ACFT & CHECKED TO MAKE SURE ANNUNCIATOR LIGHT, HORN & MASTER CAUTION WENT OUT. THEN WE PUT FLAPS UP PAST 15 DEGREES, EXTENDED SPEED BRAKE & PUT TRIM OUT OF POSITION & PUT POWER TO TAKEOFF. NO TAKEOFF ANNUNCIATOR, BUT NO HORN & NO MASTER CAUTION. R&R RT SWITCH BANK (THROTTLE) AND RIGGED IAW MM 76-11-00. OPS CHECK GOOD. REPLACED NO TAKE PCB IAW MM 24-51-02. OPS CHECK GOOD.