Hardware New 3DS doesn't start anymore

[roubig2]

Hi guys,
I recently bought a new 3DS with the latest firmware but the owner gave me a 9.2 nand backup so I would be able to hack it, so i did a hardmod to restore it and i did it successfully.
I tried to start the device while it was open and yes, it was successfully downgraded to 9.2.
The problem is that when i reassembled the 3DS, i tried once again to start it but i put the battery in the wrong way and i think it damaged some fuses. Now the 3DS doesn't start anymore, when i press the power button it shows nothing and there is no light, same thing happens when i plug in the AC Adaptater.

So my question is where are these fuses located ? How can i replace them ?

Thanks and sorry for my bad english

 

[nero99]

Hi guys,
I recently bought a new 3DS with the latest firmware but the owner gave me a 9.2 nand backup so I would be able to hack it, so i did a hardmod to restore it and i did it successfully.
I tried to start the device while it was open and yes, it was successfully downgraded to 9.2.
The problem is that when i reassembled the 3DS, i tried once again to start it but i put the battery in the wrong way and i think it damaged some fuses. Now the 3DS doesn't start anymore, when i press the power button it shows nothing and there is no light, same thing happens when i plug in the AC Adaptater.

So my question is where are these fuses located ? How can i replace them ?

Thanks and sorry for my bad english

try putting the battery in the normal way and plugging the charger in and then turn it on. you didnt blow a fuse. your battery is probably dead and either needs to be charged or replaced.

 

[roubig2]

I've already tried several times, the charging led lights itself for a few seconds then it turns off. Same thing happens if i remove the battery and only plug the charger. I think some fuses have been damaged...

 

[Roomsaver]

Sorry for off topic, but how do you put in a battery the wrong way??? AFAIK they're too far up the battery to reach on the console?

 

[shipwreck5]

why the hell would a portable device such as a 3ds have fuses (unless they are polyfuses aka reusable fuses). second of all even if there were fuses simply putting the battery in reverse wont blow them. third usually there is some sort of reverse polarity protection (diode/fet) to protect from such errors so ur 3ds should be fine as long as u didnt screw up the inside while putting it back together. in the slight chance the 3ds doesnt have reverse polarity protection... well SOL.

 

[roubig2]

The inside is perfect, i cleaned the soldering pads with some unsoldering tape and alcohol and put everything together using the same tutorial i used to disassemble the 3DS.
Btw I'm not sure that i've put the battery in the wrong way, i think it just slided from my hands right on the battery connectors for a seconde that's all. That's why i supposed that some "microfuses" have been damaged.

 

[Roomsaver]

The inside is perfect, i cleaned the soldering pads with some unsoldering tape and alcohol and put everything together using the same tutorial i used to disassemble the 3DS.
Btw I'm not sure that i've put the battery in the wrong way, i think it just slided from my hands right on the battery connectors for a seconde that's all. That's why i supposed that some "microfuses" have been damaged.

I don't think that would've damaged it, afaik.

 

[Red9419]

I think there was a thread where some guy put his battery in backwards and indeed blew a micro fuse. He replaced it and it worked iirc ill try to find it.

 

[roubig2]

Thanks Red9419, i'll bring my console to a repairing specialist but let's see which fuses can be damaged

 

[Red9419]

Thanks Red9419, i'll bring my console to a repairing specialist but let's see which fuses can be damaged

Found it!
https://gbatemp.net/threads/new-3ds-xl-fuse.416208/#post-6121991

 

[yacepi15]

I've already tried several times, the charging led lights itself for a few seconds then it turns off. Same thing happens if i remove the battery and only plug the charger. I think some fuses have been damaged...

In my O3DS XL , occurs the same when un put off the battery, its normal, but the unit doesnt recognise it, you must fix it.

 

[roubig2]

Ok, so i just brought my 3DS to a technician and they told me that the power card's (with battery pins) sheet is probably dead (they tested it)
So they bought a new one and they will receive it next week. Let's hope that it's just a sheet problem.

I'll keep you informed if i have news about the 3DS.

 

[reminon]

I had the same issue, replaced the battery board and it would power on, but wouldn't charge the battery. It blew the battery board , and a fuse by the charge port. Luckily I had another motherboard from a broken n3ds i got from a local game shop for 5 bucks,and just used it. Lol

If you intend on using the battery with the back shell off...put it in the back shell to get the orientation right..then move it over to the battery board.