As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUE TO CABIN FAILING TO PRESSURIZE ON DEPARTURE. TRIED USING BOTH REGULATORS TO NO AVAIL. ECAM PRESS PAGE SHOWED DOORS & VALVES CLOSED. FOUND AVIONICS OVERBOARD EXTRACT VALVE PARTIALLY OPEN. PERFORMED DMP 21-23-06 AND ASSIGNED TO MEL 21-23-06 AND ASSIGNED TO MEL 21-23-06 D394450. R&R THE EXTRACT VALVE (75HR) PER MM 21-23-13-04. OPS CHECK NORMAL. REMOVED PLACARD.