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Nintendo 3DS Left Shoulder Button Replacement

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Replace the left shoulder button on your 3DS and regain L-button functionality.

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  1. Nintendo 3DS Left Shoulder Button Replacement, Back Cover: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Unscrew the four Phillips #00 screws along the top of the back cover.

    • The screws are held in place by locking washers, and will not come out of the back cover.

    • The comments section is full of unlucky souls who will tell you that the screws here through step 4 will strip incredibly easily. Press down fairly hard, and go slow.

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  2. Nintendo 3DS Left Shoulder Button Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Nintendo 3DS Left Shoulder Button Replacement: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Hold the device in one hand and turn it over.

    • Grab the top edge of the back cover with your opposite hand so that the cover does not fall back into place.

    • Flip the 3DS over again so that the back cover is facing up.

    • Pull the back cover up and away from the rest of the device to remove it.

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  3. Nintendo 3DS Left Shoulder Button Replacement, Battery: crwdns2935265:03crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Nintendo 3DS Left Shoulder Button Replacement, Battery: crwdns2935265:03crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Nintendo 3DS Left Shoulder Button Replacement, Battery: crwdns2935265:03crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Insert a plastic opening tool into the notch in the lower case above the battery.

    • Pry the battery up with the plastic opening tool.

    • Grab the top edge of the battery and lift it out of the lower case.

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  5. Nintendo 3DS Left Shoulder Button Replacement, Lower Case: crwdns2935265:04crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove the nine 6.3 mm black Phillips screws from the lower case.

    • These screws will strip very easily unless you use the correct size bit. Apply pressure to the screws while turning to avoid stripping them.

    • Remove the 2.4 mm silver Phillips screw above the game cartridge slot.

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  6. Nintendo 3DS Left Shoulder Button Replacement: crwdns2935265:05crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Nintendo 3DS Left Shoulder Button Replacement: crwdns2935265:05crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Nintendo 3DS Left Shoulder Button Replacement: crwdns2935265:05crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Lift the bottom edge of the lower case off the rest of the 3DS.

    • There are still two ribbon cables connecting the mother board to the case, so be sure not to pull the lower case all the way off.

    • Use a plastic opening tool to pry the shoulder button ribbon cables off their sockets on the motherboard.

    • Remove the lower case from the device.

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  7. Nintendo 3DS Left Shoulder Button Replacement, Left Shoulder Button: crwdns2935265:06crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove the three 3.6 mm Phillips screws from the button housing.

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  8. Nintendo 3DS Left Shoulder Button Replacement: crwdns2935265:07crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Nintendo 3DS Left Shoulder Button Replacement: crwdns2935265:07crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Nintendo 3DS Left Shoulder Button Replacement: crwdns2935265:07crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Insert a plastic opening tool under the left side of the left shoulder button cover.

    • Pry the black plastic cover up from the lower case.

    • Grab the cover and lift it off of the lower case.

    • If the shoulder button contact and ribbon cable come off with the cover, be sure to reinstall them in the correct orientation.

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  9. Nintendo 3DS Left Shoulder Button Replacement: crwdns2935265:08crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Nintendo 3DS Left Shoulder Button Replacement: crwdns2935265:08crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Nintendo 3DS Left Shoulder Button Replacement: crwdns2935265:08crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Press lightly on the back of the button until it becomes unattached. Be careful not to lose the small spring and pin behind the plastic button.

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

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David Hodson

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