I hope you’re all doing well.
I’m currently facing an issue with a Switch V2 CPU (HAC-CPU-20) that refuses to power on, despite normal charging (the battery registers 4.18v). When pressing the power button, the current drain is holded in 0.34A, but there’s no display signal, leading me to suspect it might be stuck in RCM mode.
I’ve meticulously checked the entire board for shorts, but none were found. The only exception is the D- test pad indicated in the image:
The reading for point 3 on D- is 0.020 in diode scale!
I’ve scrutinized the area around pi3usb in diode scale, and everything appears to be in order. I’m curious about the IC response for D- and what further tests I should conduct.
Your insights and suggestions would be greatly appreciated.
Thank you! sorry my english is not mother language