What was found
24 ELECTRICAL FAULT BPCU INOP, 24 ELEC FAULT CDC 1 MICRO MODULE 1 INOP, 27 SLAT FAULT DATA CONFIG INPUT REDUND LOSS, 27 FLAP FAULT REDUND LOSS AFTER TAKE OFF THEN PARTIAL ELECTRICAL LOSS AND AC BUSS 1 OUT. INITIALLY REPLACED BPCU 1 AND FAULT DID NOT CLEAR. TRIED TO SWAP #2 WITH NEW AND FAULT DID NOT CLEAR. SWAPPED THE NR 1 & 2 BATTERY AND FAULT DID NOT CLEAR, THEN TRIED TO SWAP CDC LRM 01 MICRO/COMM CARDS AND RERACKED AND FAULT DID NOT CLEAR. AFTER ALL PARTS WERE SWAPPED THE GCU INSIDE OF THE MID EQUIPMENT BAY TO BE COMPLETELY LOOSE INSIDE OF TRAY AND NOT ENGAGED INTO ELECTRICAL WIRING PLUGS. REINSTALLED GCU AND SWAPPED ALL PARTS TO ORIGINAL CONFIGURATION AND ALL OPS CHK PASSED WITH NO DEFECTS FOUND.