I recently left my Switch on the shelf in sleep mode for about 2 months. I came back to boot it into RCM, and Hekate stated the battery was at 0%, then promptly shut off. Unfortunately, after over 48hrs of charging, including with two different OEM chargers, the battery voltage has not changed - stuck at 2.9V. I started buzzing around the charging ICs and USB port, and I haven’t been able to find any shorted caps, however I did find a few anomalies.
-Pin 5 (VCCIN) and pin 6 (VSVR) of M92 are reading 1.9V on their capacitors, should be around 3.3V.
-Pin 36 (VCONN_IN, aka USB-C power input) reading 0.9V on its capacitor
So, I’m not sure where the issue lies, but I feel like it’s somewhere before the M92. For reference, the USB-C port fuse is reading 5.29V from my OEM charger.