Hardware Power supply problem

[tech_land]

Hello, this morning my switch do not want to turn on.
I tried to check the power supply using 2 different PSU official Nintendo and both measure 15.9v correctly.

I’ve opened my switch and check battery tension alone that measure only 4/3.9v so the battery is very low and sems it did not charged this night . So I tested the battery pin on the base of the motherboard and surprise: no voltage in there.

So the power arrive to the nearest pins of the PSU connector with 15v but do not arrive to the base of the battery connector (0v): (see attachment) any suggestion for check and fix this problem?

Thanks

 

[tech_land]

Up…

 

[Phantomas77]

M92T36, check the caps around it

 

[jkyoho]

I’ve opened my switch and check battery tension alone that measure only 4/3.9v so the battery is very low

Switch battery voltage max out at 4.23v-ish, 3.9v is pretty much closed to 90% charged, NOT VERY LOW.
Also If you are expecting 15v goes into the battery terminal, I think you would see some popcorn out of your battery BMS board. This battery designated charging voltage is 4.35v max I believe. The 15v from power adapter/charger only ends at BQ chip then it converts to 4.35v through 2R2 inductor and feeds to battery terminal/socket

Post automatically merged: Apr 29, 2024

You should check what voltage around m92t and BQ instead.