No display backlight in Wii U Gamepad

After replacing the LCD and Touch screen in a Wii U gamepad I do not have any video or backlight in the screen.

The previuos screen was broken but as well not showing any image.

Does any one has some schematics to check fuses or any other component in the gamepad's motherboard.

I am suspecting as well, like any other Nintendo's console that the bluetooth/wifi card could be damage and circuit will not turn on the LCD, but I am getting response from touch screen and corresponding sounds.

Any advice will be appreciated.

JM