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Nintendo handheld device released February 2011, identified by model number CTR-001.

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3D slider doesn't work

I just got my hands on an original (2011) 3DS with a broken 3D slider. The slider itself, well, slides, but it doesn’t change anything. The console is stuck permanently in 3D mode.

How do I fix it? I’m willing to crack open the 3DS as my final goal is to completely fix it and keep it. :)

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Hi Nikki!

I’m affraid this is a hardware fault.. But you could try the simple basics first. Full system reset, check if there is dust inside there, try an air blower ect. Perhaps the slider is not seated correctly to the switch.

The slider have it’s own PCB and is connected with a ribbon cable to the PCB where the speakers are connected. It’s fixable, but it won’t be easy.. You also need to heat the glass panel too.

Tut: Nintendo 3DS Upper LCD Replacement

If you opened it up all the way to the upper LCD, please double-check step 28, step 29, step 32 and step 35, those steps are regarding the 3D slider.

You don’t need to remove the speaker assembly or the LCD it self.

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Hi! Thanks a lot! Just to confirm: I have to remove the top glass panel and in the worst-case scenario replace the ribbon cable and/or PCB?


Your welcome! Yes, you need to go all the way as in the tutorial. But you need to stop at step 27. You can replace the 3D switch from here :). It's connected with a ribbon cable to the speaker PCB. You need to replace the whole 3D switch PCB (it should come with a new ribbon cable too). After it's replaced, build it together and test.


@koppie007 One more question, if you don't mind. :)

I'm a bit confused as to where I can buy the PCB. I tried searching on eBay and Aliexpress but I can't find it.


Hi Nikki,

Don't worry about it, you can ask all the questions you want, we are here to help :).

Sry my bad, you need to search for the "Speaker Ribbon Flex Cable". Everything is on one cable.


If there are any more questions, please let me know.


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