Whether it's by dust or wear, the Main Button's Circuit Board can malfunction over time. This guide focuses on how to install a new Main Button's Circuit Board to get your device running like new.
Remove the two 2.5mm Phillips #00 screws using the Philips #00 screwdriver.
Use a plastic opening tool to pry the cover open.
After the the cover is partly open as shown, remove the cover with your hands.
Detach the board from the ZIF connector using pair of tweezers or by hand.
Flip the circuit board over and remove the connector that is on the backside, now you can safely remove the circuit board.