Hardware New 3DS buttons and touch not working

giofrida

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Update:
user @testerfan helped me out troubleshooting the issue. Apparently, I/O lines connecting CPU to the many microcontrollers (such as the touch screen controller) are damaged and cannot be repaired since Nintendo engineers traced them between top and bottom layers of the board.
I ended up buying a new board for around 30 euros and console now works again.
 
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MrMcTiller

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Update:
user @testerfan helped me out troubleshooting the issue. Apparently, I/O lines connecting CPU to the many microcontrollers (such as the touch screen controller) are damaged and cannot be repaired since Nintendo engineers traced them between top and bottom layers of the board.
I ended up buying a new board for around 30 euros and console now works again.
Well... at least you got it fixed...
 

Squirrel61

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Update:
user @testerfan helped me out troubleshooting the issue. Apparently, I/O lines connecting CPU to the many microcontrollers (such as the touch screen controller) are damaged and cannot be repaired since Nintendo engineers traced them between top and bottom layers of the board.
I ended up buying a new board for around 30 euros and console now works again.
I think @testerfan is on the right track, but not fully spot-on. I have a New 3DS with the same problem. When cold booted, it is working perfectly well for about 30-45 mins, then erratic movements are starting, caused by the circle pad and shortly thereafter, the buttons stop working, except for the home button, zl/zr buttons and the thumbstick. When I leave it cool down for 1-2 hours, it is working again.

My opinion is that one of the microcontrollers, which is responsible for the touchscreen, circle pad and most of the buttons, is not making good contact with the solder pads it is mounted on. This happens a lot with chips that are BGA-mounted and heat up and cool down. When the microcontroller is properly reflowed, the board will most probably work again.

If @testerfan is reading this: do you happen to know which microcontroller is responsible for touchscreen, circle pad and buttons? I like to have a go at reflowing but I'm not sure which chip it is.
 

testerfan

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I think @testerfan is on the right track, but not fully spot-on. I have a New 3DS with the same problem. When cold booted, it is working perfectly well for about 30-45 mins, then erratic movements are starting, caused by the circle pad and shortly thereafter, the buttons stop working, except for the home button, zl/zr buttons and the thumbstick. When I leave it cool down for 1-2 hours, it is working again.

My opinion is that one of the microcontrollers, which is responsible for the touchscreen, circle pad and most of the buttons, is not making good contact with the solder pads it is mounted on. This happens a lot with chips that are BGA-mounted and heat up and cool down. When the microcontroller is properly reflowed, the board will most probably work again.

If @testerfan is reading this: do you happen to know which microcontroller is responsible for touchscreen, circle pad and buttons? I like to have a go at reflowing but I'm not sure which chip it is.
Here is the picture of the chip, it's a New 3DS XL motherboard, but it's the same architecture and the chip is roughly in the same place on a regular New 3DS model. This chip controls the touchscreen input and audio, but when the touchscreen signal is shorted - it doesn't let you do anything with the buttons as well (all buttons controlled directly by the CPU and not really affected by this failure, just same effect when touchscreen has physical dent in it - the system won't respond to the buttons).
Nintendo used this chip on every model starting with 3DS, and I've only seen the actual failures on original 3DS and 3DS XL models. Never seen this chip fail on New 3DS or New 3DS XL, even though the system may act exactly as though it's defective, reflowing it or replacing it with a new chip on New 3DS model won't do anything, as stated before the chip itself is not a problem, otherwise you would never get any audio or touch from the system no matter if it's cold or hot, once this chip fails - those functions are never coming back

bga.jpg
 

Matt1534

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Here is the picture of the chip, it's a New 3DS XL motherboard, but it's the same architecture and the chip is roughly in the same place on a regular New 3DS model. This chip controls the touchscreen input and audio, but when the touchscreen signal is shorted - it doesn't let you do anything with the buttons as well (all buttons controlled directly by the CPU and not really affected by this failure, just same effect when touchscreen has physical dent in it - the system won't respond to the buttons).
Nintendo used this chip on every model starting with 3DS, and I've only seen the actual failures on original 3DS and 3DS XL models. Never seen this chip fail on New 3DS or New 3DS XL, even though the system may act exactly as though it's defective, reflowing it or replacing it with a new chip on New 3DS model won't do anything, as stated before the chip itself is not a problem, otherwise you would never get any audio or touch from the system no matter if it's cold or hot, once this chip fails - those functions are never coming back

View attachment 144723
I have exact same problem put the board in a known working device and all symptoms returned.(Mine may work no more than 30 seconds before all buttons and touch except zr and xl and c stick. Mine will eventually freeze completely as well. Also put the good board in my device and everything works great so it's 100% the main board. I could see it being a chip and isn't getting a 100% connection causing the failure. Has anyone managed to fix their board.
 

Matt1534

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I think @testerfan is on the right track, but not fully spot-on. I have a New 3DS with the same problem. When cold booted, it is working perfectly well for about 30-45 mins, then erratic movements are starting, caused by the circle pad and shortly thereafter, the buttons stop working, except for the home button, zl/zr buttons and the thumbstick. When I leave it cool down for 1-2 hours, it is working again.

My opinion is that one of the microcontrollers, which is responsible for the touchscreen, circle pad and most of the buttons, is not making good contact with the solder pads it is mounted on. This happens a lot with chips that are BGA-mounted and heat up and cool down. When the microcontroller is properly reflowed, the board will most probably work again.

If @testerfan is reading this: do you happen to know which microcontroller is responsible for touchscreen, circle pad and buttons? I like to have a go at reflowing but I'm not sure which chip it is.
Hey did you have any luck or is the board truly no good? I guess I'll keep my eyes lot for a new board
 

sslmm

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Hi there guys.

My new 3ds has been having these symptoms for a long time but i thought that it was a faulty analog and replaced it and it worked for a year without problems.
But it started again and even with another new analog it simply doesn't respond to anything (except for the home button, zl/zr buttons and the thumbstick).

So is there any fix for this without changing the motherboard? i don't want to lose my saved games and if i change the motherboard i will lose them.

Thanks in advance
 

lone_wolf323

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Hi there guys.

My new 3ds has been having these symptoms for a long time but i thought that it was a faulty analog and replaced it and it worked for a year without problems.
But it started again and even with another new analog it simply doesn't respond to anything (except for the home button, zl/zr buttons and the thumbstick).

So is there any fix for this without changing the motherboard? i don't want to lose my saved games and if i change the motherboard i will lose them.

Thanks in advance
There is jksm and checkpoint which allow you to extract your gamesaves to have as backups in case stuff like this happens.
 

sslmm

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I know about those options but without buttons working i can't do anything. I thought that it was just a problem with the circle pad and that it would be solved by replacing it :/
 

MaRC5

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I have the same problem on New 3DS. In addition, there is also a crackling sound from the speakers. If you close and open the console, then the buttons work for a couple of seconds. Disconnecting the touchpad from the board does not help - the problem is with the controller or the capacitors / resistors next to it, or the board.
In accordance with the wiibrew, the controller name is -TI AIC3010B
39C4ETW.
 
Last edited by MaRC5,

nicker

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I have the same problem. No sound, no 3D, every button no response except c-s, zl and zr when system start.
But in GodMode9, the buttons looks normal.
So it s software problem or hardware?
 
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