Hardware N3ds xl won't turn on after reassembly

YuseiFD · Jul 29, 2021

Hello, as the title suggests, the n3ds xl won't turn on with an abrupt shutting down sound everytime i try to turn it on. I am 99% sure i didn't leave anything unplugged inside the 3ds, but i thought your opinions would be appreciated: (video for reference)

Thank you so much.

DSoryu · Jul 30, 2021

If your 3DS shuts down with a loud "POP" sound, then a ribbon cable is baddly connected. Looking at your pictures, everything seems fine so far, the only thing that must be checked first are the two ribbon cables under the camera ribbon cable that I have marked inside the circle:

You will need to detach everything again, but I'm prety sure that the issue could be in that particular pair of ribbon cables, those belong to the top screen and the speakers respectively and 99 of times people place them backrwards when reasembling the console, leading to your issue.

raging_chaos · Jul 30, 2021

If any of the ribbon cables are damaged or not plugged in correctly it will refuse to boot.

YuseiFD · Jul 30, 2021

Dartz150 said:
If your 3DS shuts down with a loud "POP" sound, then a ribbon cable is baddly connected. Looking at your pictures, everything seems fine so far, the only thing that must be checked first are the two ribbon cables under the camera ribbon cable that I have marked inside the circle:

View attachment 271617

You will need to detach everything again, but I'm prety sure that the issue could be in that particular pair of ribbon cables, those belong to the top screen and the speakers respectively and 99 of times people place them backrwards when reasembling the console, leading to your issue.

Everything is okay under there too:

raging_chaos said:
If any of the ribbon cables are damaged or not plugged in correctly it will refuse to boot.

I know, but everything is hooked up correctly, it was working fine, i cleaned the abxy button board, reconnected it and voila, it's not turning on with a loud pop.

EDIT: managed to get it to work by reassembling everything, on thing left not working, are the mic and home button, which is obvious since the ZIF connectors made by nintendo are effing retarded, i either need to push down the golden pins one by one using a thin needle, or i just need to put foam on it to push it down, only question is, since i know the ZIF Connector is for the mic, and the other is for the home button, can anyone help me identify the rest of these pins and what they do ?

raging_chaos · Jul 30, 2021

YuseiFD said:
can anyone help me identify the rest of these pins and what they do ?

The top is the Digitizer for the bottom screen, the other is for the NFC antenna.

YuseiFD · Jul 30, 2021

raging_chaos said:
The top is the Digitizer for the bottom screen, the other is for the NFC antenna.

Thanks man, sadly the home button and mic are still not working

trued with a piece of paper under it, tried pushing it from the top, same result :/

raging_chaos · Jul 30, 2021

YuseiFD said:
Thanks man, sadly the home button and mic are still not working trued with a piece of paper under it, tried pushing it from the top, same result :/

Those ribbons are notorious to work with, are you also connecting both of the shoulder button cables?

YuseiFD · Jul 30, 2021

raging_chaos said:
Those ribbons are notorious to work with, are you also connecting both of the shoulder button cables?

hey you're right, didn't work because i wasn't connecting the shoulder button ribbons, but now I managed to put enough pressure using a combination of folded paper and duct tape, and both the home button and mic work as intended, sadly the very first objectif of my disassembly was to clean the B Button because it was either not inputting or inputting twice, still hasn't worked, you ever got that issue, if so how did you work it out ? i looked around all that was said was cleaning the button which did nothing so far.

raging_chaos · Jul 30, 2021

You're kinda fortunate that I'm in the middle of an LCD replacement on a NEW XL hehe. When cleaning the buttons did you remove the membrane? Check this vid out. If its corroded make sure to neutralize it with vinegar and then clean it with IPA. If its soda or something similar just use IPA.

YuseiFD · Jul 30, 2021

You're probably right, in the video he didn't show the gluing part, im not sure but i don't suppose i have to use actual glue ?

raging_chaos · Jul 30, 2021

YuseiFD said:
You're probably right, in the video he didn't show the gluing part, im not sure but i don't suppose i have to use actual glue ?

No. The sticky part should be the membrane itself. Just clean off the contacts. In the end the rubber pads will be what holds it in place anyway.

DSoryu · Jul 30, 2021

YuseiFD said:
You're probably right, in the video he didn't show the gluing part, im not sure but i don't suppose i have to use actual glue ?

I would recommend to use hot glue (or the cold variant) as it can be removed easily if a mistake is made.

raging_chaos · Jul 30, 2021

Now that I think about it you could probably use kapton tape if you have some laying around, but after watching through that video again he says (link) he just laid it back down and it would be held together by the case. I'm fairly certain he is just using the residual stickiness that's left on the white membrane.

YuseiFD · Jul 31, 2021

raging_chaos said:
Now that I think about it you could probably use kapton tape if you have some laying around, but after watching through that video again he says (link) he just laid it back down and it would be held together by the case. I'm fairly certain he is just using the residual stickiness that's left on the white membrane.

Completely agree with u i might've missed that part because he said he'll clean under the pads as well so i thought the glue in there will get cleaned if too, thanks

Hardware N3ds xl won't turn on after reassembly

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