What was found
ON TAKE OFF ROLL AT APPROX 120 KTS ALL DISPLAYS (DV'S) STARTED FLASHING EXCEPT FOR DV NR 1 (CAPTS ). TAKEOFF WAS CONTINUED & WE HAD NUMEROUS ALERTS THAT FLASHED (CAC DOOR OPEN, A LIST OF YAW ALERTS) DURING OUR RETURN TO THE FIELD. THE FLASHING DISPLAYS CONINUED, & DU NR 6 (FOS) WAS COMPLETELY BLANK. CONSANTLY GOT INTERMITING "PACK 2 OFF" & "ANTI-SKID NO TEST" ALERTS. ON BASE TO FINAL FO SELECTED HIS EIS SOURCE TO AUX & ALL DISPLAYS CAME BACKON NORMALLY & FLASHING STOPPED. REPLACED VIA NR 2.