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Hi, My Gigabyte P34w-V3 laptop will not power the back light, I have replaced the LCD screen (inverter board inbuilt) and the back light will still not turn on. If i press the hotkey to switch the screen on it flashes for a very short moment but remains off, if a light is shone on the screen the display can be seen. The display also works via the HDMI out on an external monitor Any ideas why my back-light won’t remain on? Thanks!
Hi @damico16 , Don’t know your laptop but with most laptops the backlight power is controlled by a magnetic lid switch. i.e. the backlight power is removed when the lid is closed. It is usually located down below the screen either on the left or right side It can either be a magnet in the lid and the switch in the case or vise versa. The power for the backlight can either be directly switched through the switch contacts or the switch contacts can “inform” the system to software turn on or off the backlight power supply. The backlight power supply to the screen can either be a separate cable to the LCD screen or can be incorporated in the LCD video cable. Hopefully this is something for you to be going on with
