What was found
LAX - AIRCRAFT FAILED TO PRESSURIZE DURNG CLIMB-OUT. GOT ALT WARNING HORN AT 10,000 FT. SHORTLY AFTER ATTENDANTS ADVISED SOME CABIN MASKS HAD DEPLOYED. ATTEMPTED, BUT WAS UNABLE TO REGAIN CONTROL OF SYSTEM IN SEMI-AUTO AND STANDBY MODES. REMOVED AND REPLACED AUTO CABIN PRESSURE CONTROLLER, STANDBY CABIN PRESSURE CONTROLLER AND TWO EACH OUTFLOW VALVE ACTUATORS. BITE CHECK NORMAL. GROUND OPERATION CHECK GOOD. (M)