What was found
AT FL330, THE CABIN ALTITUDE BEGAN CLIMBING AS PRESSURIZATION BECAME UNCONTROLLABLE. A RAPID DESCENT WAS NOT NECESSARY BECAUSE THE CABIN HAD REACHED 14,500 FT AND ALL OF THE PASSENGER OXYGEN MASKS DEPLOYED. COMPLIED WITH COM PROCEDURES AND FLT CONTINUED TO DESTINATION AT 10,000 FT. THE LANDING WAS UNEVENTFUL AT ATL. MAINTENANCE REPLACED THE PRESSURE CONTROLLER, ALL USED OXYGEN GENERATORS, AND REPACKED THE MASKS. AIRCRAFT RETURNED TO SERVICE.