My repairman told me that when the mother board goes out, there are no replacements, maybe they can salvage one from another machine. That is what he told me, so I am prepared for when mine goes to the great beyond. Mine is having problems letting me know when the bobbin is getting low. Did you know that the light for the screen is adjustable? the dial is just below the green, pink buttons on the left. You can feel it with your finger.