MacBook Unibody Model A1278 DC-In Board Replacement
Introduction
Go to step 1No power to the laptop? Replace the DC-in Board.
What you need
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With the case closed, place the Unibody top-side down on a flat surface.
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Depress the grooved side of the access door release latch enough to grab the free end. Lift the release latch until it is vertical.
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Remove the following eight screws securing the lower case to the chassis:
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One 3 mm Phillips screw.
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Three 13.5 mm Phillips screws.
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Four 3.5 mm Phillips screws.
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Remove the four 10.3 mm Phillips screws securing the mid wall to the upper case.
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Each connector is different, so the following steps will show you how disconnect each in detail.
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Using the tip of a spudger, flip up the keyboard ribbon cable retaining flap.
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Pull the keyboard ribbon cable straight out of its socket.
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If the smaller connector at the right side of the keyboard ribbon cable is populated by another small black ribbon cable, remove it in a similar way to the above.
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Disconnect the DC-In Board connector from the logic board by pulling it straight away from its socket.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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