This will require some simple tools:
Flathead screwdriver
Phillip screwdriver
Soldering Iron (or Wire cutter)
Steps
1. Remove the light ribbon cable
2. Disconnect all the connectors by grab each corner with your finger nails and pull/yank down
3. Cut or desolder the 2 wire points
4. Using the flathead screwdriver reach inside to where the body of the switch. Push it down and out in an angle to release the switch
5. Remove 4 screws to release the board
6. Grab and tilt the top of the board outward to about 15-30 degree angle then lift to slide the board off the slots
7. The board is removed
Do this in reverse when you are ready to install the replacement board