Replaced lower door switch. there are several videos on youtube about doing this. Some were for models more complex than mine, so I didn't have to remove as much. I'll add that the wires connecting to control panel are short, so be careful not to pull too hard. I used numbered masking tape, on wire and circuit board, to label connections when removing, to make replacement go easier.
the trickiest part was removing and reinstalling the switch. there is a lock tab that gets moved, then switch is rotated on a pin before pulling out. that pin goes through a hole in switch. put pin through hole in new switch before rotating back into position and make sure tab is locked in place.
Also, a stubby phillips screwdriver would have been helpful for 2 of the screws.