What was found
AFTER START GOT OVERBOARD VALVE FAULT COMPLIED WITH ECAM QRH AND CHECKED MEL. DURING CLIMB-OUT, AIRCRAFT WOULD NOT PRESSURIZE. REMOVED AVIONICS EXTRACT VALVE TO FOM AV LINE C/B'S 60HR, 61HR PULLED AND COLLARED. FOUND WIRE BUNDLE CUT, FOR AV EXTRACT VALVE. PERFORMED WIRE SPLICE REPAIRS IN ZONE 133 STA 1715 TO WIRES 2123-5000-24, 5001-22, 5002-24, 5003-24, 5004-24, 5005-22, 5006-20, AND 5023-20 PER AIRBUS ELECTRICAL STD PRACTICES MANUAL, REINSTALLED VALVE, 2 GOOD LEGS. EXTRACT VLV PLACED ON MEL-GSO/23 , VALVE REMOVED AND REPLACED RSW/23. AFTER RECHECKING PREV SPLICE REPAIRS.