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Hello my dear iFixit friends. I got a 3DS XL that when opened all the way turns off. I Tried to secure the top screen with electric tape to that the ribbon won’t wiggle but it didn’t Work. I would order a replacement top screen but I am afraid it maybe the connector is what’s faulty.

So If I put that rubber ring there It works fine. No reason still I will continue to investigate.

My friend is sending me 2 faulty 3ds’s he has, and if i can repair them, i get to keep them. The 3ds xl one has the issue you’re describing and from what i can tell, it’s a issue with the ribbon cable https://youtu.be/8UifkXEkV-0 see this video for details.