iFixit

Use the flat edge of a spudger to pry the Wi-Fi board connector straight up from its socket on the motherboard.

Use the flat edge of a spudger to separate the right edge of the Wi-Fi board from the motherboard.

The Wi-Fi board is secured to the motherboard with a layer of adhesive.

Remove the Wi-Fi board from the DS Lite.

Use the flat edge of a spudger to pry the microphone connector straight up from its socket on the motherboard.

In the following steps you must pull the antenna cable between the DS Lite game cartridge reader and motherboard. Pull slowly and stop when you feel resistance to avoid damaging the cable or motherboard.

Position the antenna cable with its connector facing up and away from the motherboard using a spudger to hold it down lightly in the gap between chips on the motherboard.

Slowly and carefully pull the antenna cable until the cable connector is under the DS Lite game cartridge reader.

Continue pulling the cable until the cable connector comes out from under the game cartridge reader on the right side.

Use your fingernail or the edge of a spudger to carefully flip up the touchscreen ribbon cable retaining flap.

Make sure you are flipping up the retaining flap, not the socket itself.

Use the tip of a spudger to pull the touchscreen ribbon cable straight out of its socket.

Remove the two 3.4 mm Phillips screws securing the motherboard to the upper case.

Open the display enough to use your finger to push the front edge of the motherboard up and away from the upper case.

Do not try to remove the motherboard, as it is still connected to the upper display via the upper LCD ribbon cable.

Use your fingernail or the flat edge of a spudger to carefully flip up the upper LCD ribbon cable retaining flap.

Make sure you are flipping up the retaining flap, not the socket itself.

Pull the motherboard away from the DS Lite to separate the upper LCD ribbon cable from its socket on the motherboard.

Remove the motherboard from the DS Lite.

Now you may open the retaining flap for the lower LCD screen in the same way and separate the lower LCD screen from the motherboard.