No hdmi image on nintendo switch


I have a nintendo switch, working good exept on hdmi : no image. I have checked and change usb-c connector just in case, and p13usb. No short but after check in diode mode, this pin ( number 8 ) is high (0.800 instead of 0.430) BUT i dont know where go this line ( I have test for continuity with a lot of components but nothing, i assume maybe this line go under the soc :confused: ) anyone can confirm that ? In this case i will reball the soc.

Sorry i cannot upload image with this forum !!
thanks in advance !

Uploading: 2B.jpg…

Hello, I hope it helps you, these are the connection points and I’m sorry, my English is not my native language.