Nintendo 3DS Motherboard Assembly Replacement

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• Grasp the microphone ribbon cable near the microphone with a pair of tweezers.
• Pull the microphone straight up out of the upper case.
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• Use the flat end of a spudger or your fingernail to flip up the retaining flap on the speaker assembly ribbon cable ZIF socket.
• Be sure you are prying up on the hinged retaining flap, NOT the socket itself. Damaging the socket or cable will result in a 3DS that will blink its power LED when you press the power button - and do nothing else.
• Disconnect the speaker assembly ribbon cable with a pair of tweezers.
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• Use the flat end of a spudger or your fingernail to flip up the retaining flap on the camera ribbon cable ZIF socket.
• Be sure you are prying up on the hinged retaining flap, not the socket itself.
• When reassembling, note that the gold contacts face toward the motherboard (as opposed to the camera cable's gold contacts facing away).
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• Remove seven Phillips screws securing the motherboard to the upper case:
• Four 2.5 mm gold screws
• Two 3.5 mm black screws
• One 2.5 mm silver screw
• When you remove this screw the volume slider can fall out.
• Lift the side of the motherboard that sits along the bottom edge of the 3DS.
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• Continue lifting the motherboard assembly and rotate it until it is resting next to the rest of the device.
• Use the flat end of a spudger or your fingernail to flip up the retaining flap on the LCD ribbon cable ZIF socket.
• Be sure you are prying up on the hinged retaining flap, not the socket itself. Damaging the socket or cable will result in a 3DS that won't have a functional top screen.
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• Remove the motherboard assembly from the rest of the device.
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David Hodson

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