Hi hVE WORKED FOR SERVICE FORCE FOR YEARS BUT HAVE NEVER SEEN THIS FAULT. WHAT HAPPENS IS WHEN YOU SELECT ANY PROGRAMS YOU GET NO DISPLAY BUT ON TO LED FLASHING ONE GREEN AND ONE RED DOOR LOCK AND START PAUSE ANYONE COME ACROSS THIS BEFORE I THINK MAY DISPLAY PCB. FAULT WAS INTERMITTENT BUT NOW FAULT CONSTANT SOZ ABOUT THE CAPITALS CAPS LOCK STUCK