Sergio friend I have knowledge on the subject because I have been repairing TV for a long time but I have seen very few LED TV topics and I also did not take courses to repair this type of TV but I know where I put my hand and thanks for the openness I will check the LEDs and I tell you
Sergio friend if the problem was the LEDs in a strip there were 3 LEDs in short I changed them arm the TV at the moment it goes well thanks for your help