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Released on July 28th, 2017, the New Nintendo 2DS XL is a handheld gaming console succeeding the Nintendo 2DS.

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My device doesn't start...

I’ve repaired the Nintendo 2ds xl top screen, because it was damaged.

Now if i want to turn on my device, the blue light turns on for about 4 seconds, both of the displays are flashing and then the blue light and both of the screens turns off :(

What can be the reason?

I’ve thought it can be the battery, changed it and the same issue is happening..

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Hi!

Check the ribbon cable connection of the displays. If those are not seated properly or if the cables themselves are a bit damaged (scuffed or dented), the console won't turn on.

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But if the ribbon cable connection of the displays are not seated proberly, will both displays flash up then?

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Hi!

Yes, a bad connection does not mean that there isn't any connection, it just means that it's not enough to get a good enough signal trough.

It's honestly a dumb feature implemented by Nintendo to have the consoles check the hardware upon boot and shutdown if anything is wrong.

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can it also be a broken mainboard?

A shot smd or similar?

Or is it a pretty clear sign of no good connection?

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To me it's a pretty clear sign of a bad connection. The chances that you broke the main board while replacing the display are quite low.

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Michael D crwdns2893898:0crwdne2893898:0
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