Apple Cinema Display M8149 LCD Control Board Replacement

Introduction

This guide will show you how to gain access to the LCD Control Board on an Apple Cinema Display. The tools required for this section are the supurger and the PH 2 screwdriver.

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Étape 1 Control Boards

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Before starting, make sure the display is unplugged.
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.

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Étape 2

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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.

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Étape 3

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.

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Étape 4

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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.

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Étape 5

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

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Étape 6 LCD Control Board

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Locate the control board on the right side. Carefully remove the two orange tape plugs on either side of the control board using the spudger.

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Étape 7

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Remove the tapes from the previous step by pulling them out from the metal box with your hand.
Locate the white plastic cover at the top of the box on the tape plug. Peel back the plastic cover.
Unplug the orange tape plug on the right of the unit using the spudger.

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Étape 8

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Locate the four screws (4.79x2.33mm) on the four corners of the metal box. Remove the screws using the PH 2 screwdriver.
Lift away the metal cover with your hand to reveal the circuit board.
Unscrew the two terminal screws (4.79x2.34mm) located at the bottom of the circuit board, by using the PH 2 screwdriver.

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Étape 9

From where you removed the screws in the previous step, remove the cover of the terminal.
Gently lift and remove the circuit board from the right side of the unit.
Replace the circuit board and follow these steps in reverse to put it back together again.