ours just did same. It was door locking mechanism (inside machine, not the door catch) had burnt out. very simple repair.. remove machine lid, open door, 2 screws hold lock cover and the door mechanism, unscrew them, pull out the mechanism 4rom the top, simply unplug the old 1, replace with new 1 (£22). outside chance it could be the board, but try cheaper repair 1st.
4loyd
November 2011