This TV has 3 LED bars one below the other and the first bar that appears in the photo was placed at the top of the screen and is the original that according to the image is with a totally burned led.

I gained from another technician, 3 other LED bars of the same brand of TV that also has burned led to replace mainly the first LED bar, according to the photo, has a fully roasted LED. Three bars are original of the tv and the other two are of another tv of the same make and model.

According to the attached image, I have numbered all the bars with pencil so that the colleagues of the forum can guide me which sequence I should put on the tv. I know I should replace the burnt pink painted LEDs.

The first bar of the photo is the original of the TV, according to the image, I can not take advantage of this bar because it is very damaged, so I will use another bar of the other tv in the place of this one that is totally burned.

Led strings "A" on the sides, and Led string "B" in the middle

The staff is saying that all the led of this bar are connected in series and that the supply voltage of them is around 200v. They also report that these led do not last very long in operation that end up burning them. Is there any hint or change so these LEDs last longer without burning?

Replace the LEDs and refine the power supply (you need to remove two resistors R817 and R820).