Nintendo OLED SWITCH turns on but won't charge

Hi i’am from Germany. I have a OLED SWITCH that won’t charge. No shorts near the Power IC m92t36.

I changed the Power IC but it powers on and still no charge. If i have pluged a charger on the SWITCH it Shows 0.00 A!! The Power IC is tested on a working Mainboard.

Anyone a idea what ist is?