Introduction
Follow this guide if any of the four buttons on the front panel do not work or are broken.
Tools
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Remove the rubber layer beneath the device.
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Look for the crater beneath the rubber layer and place your thumb on it. Hold down and lift off the cover with your other hand.
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Remove the four 8.0 mm T8 Torx screws on the lid.
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Remove the lid from the device.
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Use a spudger to flip up the small flap on the ZIF connector.
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Gently pull the ribbon cable out of the ZIF connector.
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Lift the AMP Board gently while sliding the ribbon cable out through the center hole to reveal another set of wires underneath the board.
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Use a spudger to lift up one of the small flaps on only one side of the female connector.
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Pull on the wire toward the lifted side until the male connector is disconnected.
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Remove the AMP Board.
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Remove the four 30.0 mm T8 Torx screws in the corners.
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Remove the large plastic piece on top of the subwoofer while threading the ribbon cable and male connector through the hole.
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Remove the lid on top of the subwoofer.
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Flip the device over and let the subwoofer fall into your hand.
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Remove the four 16.0 mm T8 Torx screws underneath the speaker.
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Flip the device over while supporting the front panel side.
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Remove the front panel cover by lifting it.
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To reassemble your device, follow these instructions in reverse order.
Removing the rubber layer does not actually seem to be necessary.
jrhifixit -
Where do you get the replacement Pcb
niall.mcgee1 -
Rubber base removal not necessary.
Screws for first few steps may be T10, but a quality T8 driver may also work
Vicente Laluz -