Hardware BSOD & fan not working

[Kilroytbs]

Hi, I bought a broken Switch V2 (the -01 one) online for fun to practice reballing and disassembling the Switch. The Switch appears to have been dropped previously and has damage to the casing. I was hoping that the fault was only related to the APU and that I could practice reballing on it to get the Switch working again with a bit of luck, but now while taking it apart, I've noticed that the fan doesn't turn when I switch the Switch on. When I turn it on, I just get a BSOD. This is just for practice and fun, but where else could the problem be? Or does the fan not spin even when the APU is not seated properly on the board? I'm grateful for any tips.

 

[Orekul]

Have you checked the eMMC is seated properly, not certain if that will display those symptoms however it has to be worth a check

 

[zxr750j]

Have you seen this?
Good luck!

 

[Kilroytbs]

Have you seen this?
Good luck!

I already tried pushing down. Didn't result in booting, did not result in the fan spinning up. Still looking for other things to try. Took the Switch apart, everything at least "looks" normal.

Post automatically merged: Jun 21, 2025

Have you checked the eMMC is seated properly, not certain if that will display those symptoms however it has to be worth a check

I just checked this with high hopes, but everything was in place.

 

[thesjaakspoiler]

You won't detect crack in solder balls of the apu, emmc or ram chips by a visual inspection.
If nobody tried to install a modchip, then it's likely one of those three chips with a bad contact.
A dumb testing method would be to apply some pressure to those chips while booting.
If you are lucky, you can find the one that is causing this issue.
But in any case, this would be a great test subject for testing your reballing skills and equipment.

 

[Kilroytbs]

You won't detect crack in solder balls of the apu, emmc or ram chips by a visual inspection.
If nobody tried to install a modchip, then it's likely one of those three chips with a bad contact.
A dumb testing method would be to apply some pressure to those chips while booting.
If you are lucky, you can find the one that is causing this issue.
But in any case, this would be a great test subject for testing your reballing skills and equipment.

Thanks, I just meant that I visually inspected the other components and couldn't see any scratches or broken parts. It's good to know which components could be causing the problem. Until yesterday, for example, I didn't know that the BSOD could also be caused by chips other than the APU. So this is quite interesting and exciting for me. I've already tried applying pressure, but unfortunately that didn't help. Do you happen to know whether a fault in the three components you mentioned could also affect the fan? I'm confused that the fan isn't spinning. I connected a tester and the switch is charging normally, and the USB port lines are all fine. I was hoping it was just the APU, but the fan issue is making me a little bit unsure.