Accessing Apple Cinema Display M8149 Control Boards

Place the Cinema Display so that it is lying on its face and the feet are pointed away from you.

Remove the three screws (9.52 x 4.43mm) that connect the back foot to the hinge using the Hex Key.

Remove the back foot from the hinge mount by grabbing the foot and pulling upwards.

Remove the eighteen (5.25 x 4.43 mm) screws around the edge of the backplate using the Hex key.

Disconnect the small white connector leading to the display's Power button.

Gently lift the backplate off of the display. Completely remove the backplate and set it aside.

Use a Phillips #2 screwdriver to remove the four (9.52 x 3.43 mm) screws on the outer rim of the metal cover.

Next, remove the four cover (11.91 x 2.89 mm) screws located at the corners of the metal cover using the Phillips #2 screwdriver.

Unplug the large brown plug in the center-right, that connects the control board to the rest of the display.

Unplug the blue and gray plug on the right side of the control board. Repeat with the left side.

Gently lift the large metal cover which spans across the back of the whole display.