Nikon D3100 Motherboard Replacement

Remove two of the 4mm screws indicated by the circles on the bottom side of the camera.

Remove four of the 3mm screws around the eye piece located on the top of the back panel, including the screw hidden behind the auto focus label.

Remove the 3mm screw behind the rubber grip on the top right of the back panel.

Peel back the rubber grip on the right side of the camera using a spudger.

Remove two of the 5mm screws under the rubber grip.

Remove two of the 4mm screws on the left side of the camera.

Starting from the top, gently lift the back panel of the camera off. Slowly separate the back panel from the main body of the camera.

Carefully remove the ribbon using a spudger to lift up the connector and then use tweezers to pull out the ribbon.

Separate the back panel from the main body of the camera.

Remove nine of the 3mm screws connecting the metal plate to the plastic panel.

Remove the two ribbons connecting the LCD screen to the metal plate using the same method from Step 5.

Remove the old LCD screen from metal plate.

Use tweezers to gently lift the yellow tape from the back of the camera.

Use a plastic spudger to remove the 6 ribbons.

Remove the plug located on the top-right side of the camera.

Remove the plug located on the top-left side of the camera.

Use a Philips #00 Screwdriver to remove the five 3 mm screws marked in the image.

Gently pull out the side wall of the camera so that the motherboard comes out easier.

Gently lift the motherboard to separate it from the back of the camera.

Use a plastic spudger to detach the ribbon.

Replace the motherboard.