820-01041 video problem

[Djsp]

820-01041 with video problems turns on you can see the apple only a series of colored lines, I thought it was the typical problem of flex but I tried another good screen and it has the same suspicious defect a problem all gpu the tuch bar works and displays the keys, no external video

 

[2informaticos]

Did you try to boot in safe mode?

 

[Djsp]

No but I found out that they did some work on the gpu probably went to the beginning I was convinced that it was the mux but it's not a typical flaw