13" MacBook Left Speaker Replacement
Use a coin and turn the battery lock 90 degrees.
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Lift and remove the battery.
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Fully loosen, three Phillips screws along the back of the battery compartment. These three screws are captive and do not come out. They remain in place on the RAM cover.
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Pull the RAM cover back and then lift it out of the computer.
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Look on the bottom of the case and remove three Phillips screws. The two screws in the rear are 14.5 mm and the center screw is 11 mm.

The two rear screws, 14.5 mm, may or may not come out of the case easily. If you can use a magnet, tweezers, or leave them in. If you leave them in just be 100% certain they are fully loosened.
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Three Phillips screws on the rear wall need to be removed. The outside screws are 4mm and the center screw is 3 mm.
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Looking to the right, remove two Phillips screws. The screws are 6.25 mm.
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Four Phillips screws need to be removed. You need to remove the second, fourth, seventh, and ninth screws counting left to right.
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Look at the back of the MacBook. Remove four Phillips screws. The inside screws are 11 mm and the outside screws are 7.25 mm.
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Pull the RAM cover back and then lift it out of the computer.
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Look on the bottom of the case and remove three Phillips screws. The two screws in the rear are 14.5 mm and the center screw is 11 mm.

The two rear screws, 14.5 mm, may or may not come out of the case easily. If you can use a magnet, tweezers, or leave them in. If you leave them in just be 100% certain they are fully loosened.
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Three Phillips screws on the rear wall need to be removed. The outside screws are 4mm and the center screw is 3 mm.
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Disconnect the speaker cable connector from the logic board.
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This step may or may not apply to your MacBook. Remove the Phillips screw in the upper right hand corner of the airport card. This will release the cable holder on the speaker wire.
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Remove the Phillips screw on the left speaker.
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Pull the speaker cable underneath the Airport Card antenna wires and lift the left speaker out of of the case.

Reassemble this device by following these instructions in reverse order.
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