820-000138, no external image

[iMuhtaseb]

Hello!

I have a 2015 15" (IGPU-only, NO DGPU), 820-00138..

Has a broken screen with some liquid spill around U7310 pin 11 to 14, C7316, C7319, C7318 and C7317..
All caps replaced and U7310 chip cleaned and resoldered properly..

The computer POSTs now, I try another screen and it shows image successfully...

But for some reason it's not showing an image externally.. I tried the HDMI output and both of the thunderbolts outputs with no luck..

Honestly I have no idea where to start now and a bit lost..



Help?

Thanks!

[iMuhtaseb]

Re: 820-000138, no external image

[ SOLVED ]

Apparently all three ports were really really dirty and none of them were communicating properly.

[Sephir0th]

Re: 820-000138, no external image

Thanks for Sharing the solution!