I replaced the door lock/switch. It was very easy after watching the how-to video. I would recommend a second set of hands to hold the front cover in place when reassembling the door. Also if you have and error code I found the way to clear it on this model was to press any three buttons in sequence (next to each other) three times in a row and the computer will reset. Press cancel after all of the lights on the control panel come on and it will now operate normally.