The LED backlight may burn out, causing the backlight to cease working properly. This guide will demonstrate how to replace the LED backlight.
Remove the two 10 mm length screws using the Phillips head #1 which are located underneath the kickstand of the keyboard and directly next to it.
Remove the sixteen 5 mm length screws using the Phillips head #2.
One of the screws may be located underneath a manufacturer's sticker.
Lift up and remove the plastic casing.
Remove the metal backing located directly underneath the white plastic casing.
Disconnect the ribbon cable that connects the LED board to the motherboard.
Carefully remove the LED board, which should now come free from the casing.