New 3DS LL Charging, but wont turn on? | /r/3DS | Page 1

tropic scaffold Mar 27, 2025, 8:56 PM

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Hey there! I recently aquired a new nintendo 3ds ll that had a bad left stick, i disassambled the console, restored the missing stick but now it just wont turn on anymore. It does charge, i feel the battery warming up, but i cant get the console to boot at all. Any tips?

tropic scaffold Mar 27, 2025, 9:20 PM

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oh, also no popping when i try to turn it on. already reseated the screen cables, but theres no difference

orchid urchin Mar 28, 2025, 9:20 AM

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@tropic scaffoldmake a pic of the mainboard and cables

tropic scaffold Mar 28, 2025, 9:23 AM

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Ill take another one when im back home, still at work

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I reseated all of the cables yesterday, no success so far

orchid urchin Mar 28, 2025, 9:34 AM

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ok now it will sound stupid but unplug the analog stick cable

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if your 3ds is modded dont put the sd card in. it boots fast in a bootchain loader

chilly axle Mar 28, 2025, 11:04 AM

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why would the analog stick cable do anything

orchid urchin Mar 28, 2025, 11:13 AM

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chilly axle why would the analog stick cable do anything

you never know

orchid urchin Mar 28, 2025, 11:14 AM

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chilly axle why would the analog stick cable do anything

https://cdn.discordapp.com/attachments/1354545393307750460/1355128185385259048/image0.jpg?ex=67e7ccf8&is=67e67b78&hm=3c6604fbf6618d6064b8e4d0d06fb1562c086f29e0003ceb9b4d2a9a94653aef& plus check this ribbon

tropic scaffold Mar 28, 2025, 3:43 PM

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it just booted up again

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The top screen is on, but has no picture? Lol

orchid urchin Mar 28, 2025, 4:24 PM

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@tropic scaffold which ribbon you reseated? maybe you miss placed the screen ribbon cable on the back

tropic scaffold Mar 28, 2025, 4:44 PM

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I didnt do much honestly, i powered it on and it just worked

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I still need to figure out, how i need to "fold" the cable correctly, so that the mobo can fit

orchid urchin Mar 28, 2025, 4:54 PM

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tropic scaffold I still need to figure out, how i need to "fold" the cable correctly, so that th...

mobo?

tropic scaffold Mar 28, 2025, 5:30 PM

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motherboard* xD

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Now im getting a slight blue light, and it turns of immediately

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inserted the sd card --> popping sound

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Imma check the ribbons again

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Sigj

orchid urchin Mar 28, 2025, 5:48 PM

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ow then maybe clean the sd card ribbon slot and reseat it

tropic scaffold Mar 28, 2025, 6:10 PM

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should be good, right?

tepid orbit Mar 28, 2025, 6:10 PM

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tropic scaffold Imma check the ribbons again

I think the issue is the ribbon cables, some of the cables can click into place even when misaligned

tropic scaffold Mar 28, 2025, 6:10 PM

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aye

tepid orbit Mar 28, 2025, 6:10 PM

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So they click in but won't work

tropic scaffold Mar 28, 2025, 6:15 PM

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Oh, i think that mf:

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Wasnt properly in

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tropic scaffold Mar 28, 2025, 6:50 PM

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aight, still a popping sound, bottom screen is flashing

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i guess time to reseat it all aganeeee

orchid urchin Mar 28, 2025, 6:52 PM

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tropic scaffold

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Red one pins must head down

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Blue pins must be up side

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I miss placed the red one once sooo yea

tropic scaffold Mar 28, 2025, 7:27 PM

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got it, ye

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reinstalled the cables again

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no pop, but just a flashing light and it turns off

tepid orbit Mar 28, 2025, 7:30 PM

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tropic scaffold no pop, but just a flashing light and it turns off

Still something wrong with top or bottom LCD cables

tropic scaffold Mar 28, 2025, 7:30 PM

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i guess imma buy a replacement cable thenß

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are there replacement ribbon cables for both of em?

tepid orbit Mar 28, 2025, 7:31 PM

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Yes

tropic scaffold Mar 28, 2025, 7:31 PM

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thank fk

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imma just do a whole reshell and replace it

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thanks alot for the help lads! Heart

tropic scaffold Mar 28, 2025, 7:32 PM

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tepid orbit Still something wrong with top or bottom LCD cables

my guess is the top screen, since the bottom one is flashing when turning on

orchid urchin Mar 28, 2025, 7:35 PM

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tropic scaffold my guess is the top screen, since the bottom one is flashing when turning on

Wait didn’t you said before when you don’t insert the sad card reader then it works?

tropic scaffold Mar 28, 2025, 7:36 PM

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nono, it started to boot after inserting the sd card

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but, thats just a luma thing

orchid urchin Mar 28, 2025, 7:36 PM

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Ah kk

tropic scaffold Mar 28, 2025, 7:36 PM

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i got it to boot earlier with the bottom screen working

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but even after i reseated the cable, wont boot

orchid urchin Mar 28, 2025, 7:37 PM

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tropic scaffold Ill take another one when im back home, still at work

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Check if the slot is fully down

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Cause sometimes the top part is to far up for conection

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It counts for every ribbon that have this mechanic secure

tropic scaffold Mar 28, 2025, 7:38 PM

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tepid orbit Mar 28, 2025, 7:38 PM

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tropic scaffold my guess is the top screen, since the bottom one is flashing when turning on

I agree, sounds like the bottom screens backlight is turning on (as it should) right before the boot check fails, which turns off the 3ds

orchid urchin Mar 28, 2025, 7:39 PM

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Hmmm

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True

tropic scaffold Mar 28, 2025, 7:39 PM

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A full pic

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Everythings seated correctly i suppose

orchid urchin Mar 28, 2025, 7:40 PM

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tropic scaffold

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I know I know it’s probably the screen ribbon cable I just wanted to say

tropic scaffold Mar 28, 2025, 7:42 PM

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Might've killed it earlier, the cable looks a bit crooked lmao

orchid urchin Mar 28, 2025, 7:44 PM

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Well on my new 3ds it looked worser but still works but you could have bad luck

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And right now I see it

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When doing the ribbon cables open the 3ds

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Gives a bit more cable length

tropic scaffold Mar 28, 2025, 7:45 PM

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Ohhhh.

orchid urchin Mar 28, 2025, 7:45 PM

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😅

tropic scaffold Mar 28, 2025, 7:45 PM

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Im cooked

orchid urchin Mar 28, 2025, 7:45 PM

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Yep probably

tropic scaffold Mar 28, 2025, 7:45 PM

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But also relieved, since its only the cable

tepid orbit Mar 28, 2025, 7:45 PM

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tropic scaffold

Is this the bottom half of the console?

tropic scaffold Mar 28, 2025, 7:46 PM

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Yessir

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Yknow, took the mobo out

tepid orbit Mar 28, 2025, 7:48 PM

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I think that ribbon cable is the top LCD data

tropic scaffold Mar 28, 2025, 7:48 PM

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Oh?

orchid urchin Mar 28, 2025, 7:51 PM

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Back side ribbon is for the lcd (folded one)

tepid orbit Mar 28, 2025, 7:51 PM

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If it is then it would be part of the issue (why you were able to turn on the 3ds with the top screen not working) but it wouldn't explain why it's not turning on now

tepid orbit Mar 28, 2025, 7:51 PM

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orchid urchin Back side ribbon is for the lcd (folded one)

Yeah but which one

orchid urchin Mar 28, 2025, 7:52 PM

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There is only one folded ^^

orchid urchin Mar 28, 2025, 7:52 PM

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tropic scaffold

tepid orbit Mar 28, 2025, 7:52 PM

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I mean which LCD ribbon cable is the folded one

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That's what I'm trying to figure out

orchid urchin Mar 28, 2025, 7:54 PM

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https://youtu.be/xo-MjlE3PcA?si=FXhyO_qvBpZD6-8W 21:16

YouTube

MilaNavi

New 3ds XL top screen replacement - detailed tutorial

*VIDEO ANTIGO TRAZIDO PARA O CANAL PRINCIPAL

I hope this video helps you!

▶ Play video

orchid urchin Mar 28, 2025, 7:54 PM

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tepid orbit That's what I'm trying to figure out

So folded is the screen one that on bottom motherboard the upper laying cable

tropic scaffold Mar 28, 2025, 7:55 PM

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Thats exactly the one

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Also the tutorial i used to "fold" the cable correctly

tepid orbit Mar 28, 2025, 7:55 PM

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I mean what is the function of the LCD cable? I think it's the data cable but I'm not sure

tropic scaffold Mar 28, 2025, 7:56 PM

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I mean, i had a black screen when i put it in reverse

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so i guess data

tepid orbit Mar 28, 2025, 7:56 PM

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tropic scaffold I mean, i had a black screen when i put it in reverse

You sure that wasn't just the right way?

tepid orbit Mar 28, 2025, 7:57 PM

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tropic scaffold I mean, i had a black screen when i put it in reverse

Do you mean black screen but the console stayed on?

tropic scaffold Mar 28, 2025, 7:57 PM

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Yessir

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Shes putting it in like that

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And before i fixed it, i had the contacts showing up

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and thats how i fucked up, i suppose

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Cable got a bit bent, seems like i bricked the cable doing that

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See what i mean?

tepid orbit Mar 28, 2025, 8:01 PM

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The longer cable should be bent with both cables facing towards the motherboard

tropic scaffold Mar 28, 2025, 8:01 PM

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exactly

orchid urchin Mar 28, 2025, 8:01 PM

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tropic scaffold

Uhm that’s the wrong bent you foldet it wrongly

tepid orbit Mar 28, 2025, 8:01 PM

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If you've put them in correctly then I would say replace the top LCD, the cables are likely damaged

tropic scaffold Mar 28, 2025, 8:02 PM

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i know, just for reference how bad the cable lookw

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thats what it looked like before fixing kt

orchid urchin Mar 28, 2025, 8:02 PM

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Kk

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Can you unplug it and make the cable straight and make a pic maybe you can see a damaged tray

tropic scaffold Mar 28, 2025, 8:03 PM

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I can do that! Sure

orchid urchin Mar 28, 2025, 8:04 PM

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If its on a good spot you can solder a thin cable before the broken tray and after the broken part

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But easier way is a replacement screen

tepid orbit Mar 28, 2025, 8:05 PM

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That long cable is the data one, meaning it's not actually the reason the 3ds isn't turning on. But it is the reason the top screen was black when it did turn on. That means that cable isn't the only one with a problem

tropic scaffold Mar 28, 2025, 8:06 PM

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oooh boi

tepid orbit Mar 28, 2025, 8:07 PM

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Okay, after looking for a bit i can tell you that the cause for the 3ds not turning on is either that ribbon cable next to the data one we were just talking about

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The motherboard connector (wide one next to abxy)

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Power board connector

tropic scaffold Mar 28, 2025, 8:08 PM

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oh damn, i see

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i could try to reseat it again

tepid orbit Mar 28, 2025, 8:08 PM

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Or bottom LCD backlight

tropic scaffold Mar 28, 2025, 8:09 PM

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Lemme disassemble the console again

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and imma take a pic of the LCD connectors on the back of the mobo

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Hold on tight

orchid urchin Mar 28, 2025, 8:09 PM

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Sure

tepid orbit Mar 28, 2025, 8:10 PM

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I'd guess that the issue is the cable next to the one we were talking about

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I think red is causing the 3ds to not turn on and yellow is causing the top screen to not work when it did turn on

tropic scaffold Mar 28, 2025, 8:14 PM

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there you go

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Hol up, discord sux agane

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orchid urchin Mar 28, 2025, 8:15 PM

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orchid urchin Mar 28, 2025, 8:16 PM

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tropic scaffold

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Not fully in

tropic scaffold Mar 28, 2025, 8:19 PM

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Better?

orchid urchin Mar 28, 2025, 8:19 PM

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You should not be able to see the robin cable pins when the lock is closed

tropic scaffold Mar 28, 2025, 8:19 PM

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orchid urchin Mar 28, 2025, 8:19 PM

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Yes

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Now it’s in fully

tropic scaffold Mar 28, 2025, 8:21 PM

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Also good?

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orchid urchin Mar 28, 2025, 8:23 PM

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Left side is slightly more out

orchid urchin Mar 28, 2025, 8:23 PM

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tropic scaffold

tropic scaffold Mar 28, 2025, 8:23 PM

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imma try it like that for now

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since it doe get contact

orchid urchin Mar 28, 2025, 8:24 PM

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Sure good luck

tropic scaffold Mar 28, 2025, 8:32 PM

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guyd

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you are both fucking geniouses

orchid urchin Mar 28, 2025, 8:33 PM

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works now?

tropic scaffold Mar 28, 2025, 8:33 PM

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holy shit

orchid urchin Mar 28, 2025, 8:33 PM

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nice ^^ good job now back to a happy live

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i had same issues 2 days ago when i motherboard swaped 2 new 3ds xls cause i wanted ips pannels so badly

tropic scaffold Mar 28, 2025, 8:34 PM

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I feel ya, my top screen is ips

orchid urchin Mar 28, 2025, 8:35 PM

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i have dual ips

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like my gf

tropic scaffold Mar 28, 2025, 8:35 PM

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oh shi

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Sent you a dm btw

tepid orbit Mar 28, 2025, 9:28 PM

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tropic scaffold

Finally, I'm proud

orchid urchin Mar 28, 2025, 9:29 PM

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well it shorted again this time probably when he opened the 3ds fully cause the data cable was not fully in but now it works

tropic scaffold Mar 28, 2025, 9:58 PM

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Thanks alot again, friends!

#New 3DS LL Charging, but wont turn on?