Introduction

Prerequisite guide for removing the motherboard assembly.

  1. Grasp the microphone ribbon cable near the microphone with a pair of tweezers. Pull the microphone straight up out of the upper case.
    • Grasp the microphone ribbon cable near the microphone with a pair of tweezers.

    • Pull the microphone straight up out of the upper case.

  2. 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.
    • 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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  4. 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.
    • 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).

    Be sure to fit the motherboard inbetween the joystick and volume slider in properly (you can double check by seeing if the volume slider on the outside goes up and down smoothly). When I closed it the first time it was stuck on full volume so I needed to go back in and readjust!

    Veronika Todd - Reply

  5. Remove seven Phillips screws securing the motherboard to the upper case: Four 2.5 mm gold screws Two 3.5 mm black screws
    • 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

    • Lift the side of the motherboard that sits along the bottom edge of the 3DS.

    Do yourself a favor and DON'T remove the 2.5 mm silver screw (yellow circle). It just holds in a little plastic bit under the volume control. The board comes out just fine with the screw still in. If you remove it, the plastic bit will fall out at random when you turn over the case.

    First time I took mine apart, I noticed something fall out later, tracked it down and then puzzled over what it was and where it came from.

    Chupi - Reply

    There is some adhesive where the AC adapter plugs in so I recommend watching out for that

    Devin Stephenson - Reply

  6. 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.
    • 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.

    Reinserting this ribbon cable is quite difficult. I found opening the case so that it sits upright at a 90 degree angle helps. The first two times I tried reassembling the top display did not work. Turned out that I was not inserting the ribbon cable in enough. I used tweezers to push this in by gently grabbing the ribbon cable. I was continually inspecting the cable for damage but apparently did not damage it. If anyone has a better idea on how to reinsert this cable I think others would greatly appreciate it.

    pbrazis - Reply

    Putting the cable back in is the hardest part out of all of this (if you can get past the screws near the beginning). If you have a friend that you trust very much and is very gentle, another pair of hands here really will help. If you're without a friend, make sure to use some flat, angled precision tweezers to push the ribbon in with one hand (pointed tweezers will do in a pinch but you'll have to be careful - I put a small dent in the ribbon and thought I'd broke it), and then use a spudge or something in the other to push the flap down.

    Also worth noting is that the ribbon for the top screen also handles the 3D - if you complete the guide and find you are unable to turn the 3D effect off, you didn't insert the ribbon enough, as I had the problem and re-inserting the ribbon fully fixed it.

    malcolmdemaggio - Reply

    Careful when reassembling -- watch the position of the black wifi antenna wire! I got mine most of the way back together and noticed it wouldn't close all the way. This wire had come out of the little posts holding it in place and was wedged between the screen and motherboard. Now I have to take it all apart again to fix this.

    Also if you're taking the board out of a working unit to get at the CLK signal to backup the NAND chip ("hardmod"), you don't need to remove the difficult ribbon cable in this step, or the other two wide ones at the top right from earlier. Leave them attached and swing the board out. It won't rotate a full 180 degrees to sit flat outside the unit, but you can open the screen 90 degrees to prop the rest up while having the board out on your table.

    Chupi - Reply

    I recommend not taking it off in the first place, as reattaching it is awfully difficult. You can easily clean out your abxy buttons with it still attached

    Martin - Reply

    I am having problems re-inserting the three ribbon cables (3DS XL). Do you need to flip up the retaining flaps first? (I just pulled them out of the slots when removing them.

    darren.brundell - Reply

    if the flap for the ribbon cable breaks what do you do

    lionmine ____ - Reply

  7. Remove the motherboard assembly from the rest of the device.
    • Remove the motherboard assembly from the rest of the device.

    Make sure when putting the motherboard back onto the bottom part of the casing that the antenna wire is where it should be - the first time I put this back together the wire got loose and was smooshed in between the casing and the Y and Power buttons, causing them to be stiff/not work. Using the spudge should help in pushing the wire back into the slots along the inside of the case.

    malcolmdemaggio - Reply

Conclusion

To reassemble your device, follow these instructions in reverse order.

David Hodson

Member since: 04/13/2010

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