Nintendo DSi XL Left Shoulder Button Replacement

Remove the two Phillips screws securing the battery cover to the back of the handheld console.

Lift the battery cover off the back of the DSi XL.

Lift the battery from the DSi XL.

Remove the four rubber screw covers on the lower case by prying them up with a push pin.

Remove the following seven Phillips screws that secure the lower case to the rest of the DSi XL:

Four silver 5.3 mm screws

Two black 5.3 mm screws

One black 2.5 mm screw

Insert a spudger between the upper and lower case at the bottom left corner of the DSi.

Slide the spudger along the bottom edge of the upper case to release the latches securing the upper case to the lower case.

Lift the lower case from the front edge.

Rotate the lower case away from the DSi.

Using a spudger, pry the SD card/right shoulder button connector off its socket.

Pry the volume button/left shoulder button connector off its socket on the motherboard with a spudger.

Remove the two gold 4.0 mm Phillips screws securing the left shoulder button assembly to the lower case.

Lift the left shoulder button assembly from the lower case.

The components of the left shoulder button assembly:

Left shoulder button

Shoulder button spring

Retaining pin

Left shoulder button support panel