Introduction
Use this guide to replace a faulty power supply.
What you need
Video Overview
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Stick a heavy-duty suction cup near each of the two top corners of the glass panel.
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While lightly holding the suction cup against the glass, raise the movable handle until it is parallel with the other handle (as highlighted by the third picture).
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Gently lift the glass panel perpendicular to the face of the LCD enough to clear the steel mounting pins attached along the underside of the top edge of the glass panel.
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Pull the glass panel away from the lower edge of the iMac and carefully set it aside.
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Carefully lay the iMac stand-side down on a flat surface.
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Use a thin hooked tool to lift one side of the top edge of the display by its steel outer frame.
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Use a pair of tweezers to pull the vertical sync ribbon cable out of its socket on the LED driver board near the top left corner of your iMac.
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Rotate the display out of the outer case enough to disconnect the LED backlight power cable from the LED driver board.
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Squeeze the two display data cable connector arms together to unlock it from its socket on the logic board.
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Pull the display data cable connector away from its socket on the logic board.
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Lift the display for enough clearance to disconnect the LCD thermal sensor cable connector from its socket on the logic board.
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Carefully pull the display toward the top edge of your iMac and lift it out of the outer case.
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Disconnect the DC power cable by using your index finger to depress the locking mechanism on the back of the connector while you pull the connector away from its socket on the power supply.
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Once the locking mechanism has cleared the socket, pull the DC power connector away from the power supply.
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Disconnect the AC power inlet cable by depressing the locking mechanism while pulling the connector away from its socket.
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Remove the following screws securing the power supply to the outer case:
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Two fine-thread shouldered T10 Torx
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One coarse-thread shouldered T10 Torx
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One short coarse-thread T10 Torx
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Lift the power supply out of the outer case while gently de-routing it from any wires that may get caught.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.