⟐ Answered апреля 28, 2025 at 11:13 GMT-7

⟐ Edited by author апреля 24, 2022 at 3:29 GMT-7

⟐ Commented мая 08, 2026 at 12:49 GMT-7

Recently, I've decided to pick up my New 3DS to play some Picross, and noticed that it wouldn't power on. I tried charging it over night, but it still wouldn't work, I assume it never charged despite turning on the charge light.

I checked with a multimeter and the battery only showed 1.2v, so I'll assume it's dead dead.

As I've been waiting for a new battery to arrive, I've been playing it with a power bank attached.

Today, it arrived, and the 3DS doesn't turn on with it. It sees the battery, it shows it's fully charged, but when I unplug the power bank, it immediately shuts off.

I don't want to assume I have a new dead battery just yet, but I haven't opened it just yet.

Pertaining to the USB-C mod, it's only become an issue now, despite around a year of using it, it charged the battery just fine.

⟐ Commented мая 08, 2026 at 12:01 GMT-7

Also, while not a big deal, the green "3D" LED no longer lights up after I opened up the 3DS. The 3D slider hasn't worked for years and the 3D is stuck on, but I don't want to risk fixing this if it requires heating and prying off the upper display front panel.

⟐ Commented мая 06, 2026 at 17:48 GMT-7

Current state:

• charging LED lights up with USB C connected
• power LED not reacting to the Power button
• new battery

As the battery is also new, I can rule that out. Any fuses I should check?

USB C mod solder picture:

⟐ Commented мая 06, 2026 at 7:07 GMT-7

⟐ Commented мая 05, 2026 at 11:18 GMT-7

not black like it was turn off but black we definitely see that it is turn on but won't show anything. (backlight working probably?)

I tried to hold the power 10 seconds and wait but the only image i can see is when I push the power button when it's on and it asks you if you are sure if you want to turn it off. From there, and from there only, I can push the home button and it shows the white screen telling you you're going to the home screen. but it is stuck there and won't go to the actual home screen.

I want to know what exactly is the problem here and if you know how to fix it i would be grateful.

thank you

⟐ Commented мая 04, 2026 at 21:13 GMT-7

⟐ Commented мая 04, 2026 at 20:42 GMT-7

My 2ds stopped working after leaving on sleep overnight. When I woke up and removed the sleep mode it stayed on but not image or sounds was given. I also could not turn off the 2ds by any means.

I left it on until the battery runned out and fully charged it the next day.

Now it just doesn't turn back on no matter what I do.

⟐ Answered мая 03, 2026 at 22:37 GMT-7

I'm aware that if the blue light flashes on then back off again, it has something to do with ribbon cable issues, which I'm more than aware of. But I have a few concerns: namely, which cable?

The most pressing issue is that the cable connecting the joystick to the main board isn't seated properly. I ordered a few replacements so hopefully the little plastic latch letting the joystick cable seat into the mobo will fix my problems, but I've also tried the bathtub moonshine solution of electrical tape over said cable and it still wouldn't boot: not surprising, it seemed to be misaligned each time I tried it.

One thing worries me though: this little black cable at the top. All the other ribbon cables and connectors appear to be intact, but because this was the first time fully breaking down a N3DSXL, I fear I may have roughed this (particularly delicate) cable up too much and will need to replace it. Can anyone confirm or deny my concerns so I know what to replace if the plastic latch doesn't fix the issue? Every other ribbon cable seems to be in good condition and seated properly.

⟐ Commented мая 02, 2026 at 15:43 GMT-7

⟐ Commented мая 01, 2026 at 19:38 GMT-7

There's definitely some corrosion on the board in the bottom left. I didn't want to scrub too much away yet though, since it looks like maybe the surface of the board is cracked? Is that cleanable?

One of the pins in the cartridge slot, all the way on the right when the back cover of the GBP is off, is higher than the others. Is this normal?

Any thoughts or insights are much appreciated!

⟐ Commented апреля 30, 2026 at 22:11 GMT-7

⟐ Commented апреля 30, 2026 at 8:42 GMT-7

I believe i broke a locking ribbon cable on my upper 3ds xl screen. Specifically the annoying one of three in the top right corner and now i cant get it to lock down. I used UV glue in the meantime but now my 3ds intermittently turns off every once in awhile. How can i fix this without buying a whole new 3ds?

⟐ Answered апреля 29, 2026 at 5:29 GMT-7

⟐ Answered апреля 29, 2026 at 0:38 GMT-7

⟐ Commented апреля 27, 2026 at 7:29 GMT-7

! I hope someone might be able to help me out here.

I was doing a capture card mod on my New3DSLL (the japan version of XL) a year or so ago now and when I got to the step on making sure everything still worked, well it didn’t work. With the battery connected I get no reactions from the device when trying to power it on. No amber, no blue, no lights at all. If I plug it in without thr battery the amber light lights up for 5seconds then goes off. If I connect the battery and the charge it lights up amber but still does not turn on.

I believe I may have accidentally put the battery in in reverse when I was trying to test ot initially, but cannot be too certain that that was the case.

I tested the red (0.012) and the blue ( 0L and then 12.00) as labeled on that one picture that floats around from infinity (it wont let me add the picture sorry). I am not too knowledgeable with multimeters and dont know if this is right.

Does this sound like a case of one of the fuses or the chip on the daughter board for the abxy being blown or does it sound like something else is wrong along the way of doing the mod?

Thank you in advance <3

⟐ Commented апреля 27, 2026 at 7:24 GMT-7

⟐ Answer accepted апреля 25, 2026 at 6:34 GMT-7

(READ POST FROM 2/1/25]

⟐ Edited by author апреля 22, 2026 at 14:53 GMT-7