I have a Nintendo switch Mariko that overheated when it was in sleep mode, I only noticed this 90 minutes later when I picked it up out of its carrying case. After multiple failed attempts to boot up the Switch I took it apart and inspected the board. I don’t see any burned/damaged parts, and I know the battery still has charge. I measured that the switch is receiving 15V and 0.48 amp while charging and I noticed some issues around the max77812 IC. The big problem here is that I do not know what the normal values of the resistors are so I cannot tell if something is wrong or not, apart from the 2 resistors that don’t give me a reading at all which are likely broken. It might be important to note that the battery management IC is getting a little warm while I plug in the battery + charger, while the max77812 and its support stays cool. I attached an image with my measurements around the max77812 below, some advice or ideas would be highly appreciated. (all values are in ohms even if I forgot to note it.)
imgur . com /a/ B98RlvV
Did you check for shorted caps around the M92, BQ, and P13USB chips?