820-01521 usb activity and hdmi not working

[Mineccia15]

Hello, I have a water damaged 820-01521.

After replacing U8200 and component around like R8060 - C8200 - C8201 and not the cd3215C00 I got the MacBook working.

After a week I got it back, still charging on all the 4 combinations and fully working except for the data lines and hdmi from the usb-c port.

What should I check/do?

 

[2informaticos]

Remove USB-C connector from chassis and inspect its terminals.
S-UEM2 is recommended to check diode mode to ground on J3300 lines.

Check U2800 power rails and surrounding components for corrosion.