The door locked light has started flashing on Hotpoint WML520. The machine will not do anything! If I turn it off at the wall and leave it 10 seconds then turn it back on the door lock makes a loud screech noise and the door locked light stays lit? It will then start any programme you select for about 2 seconds before stopping and not doing anything. After that the door will not open!!!!!!!!! Is it time for a new machine?