Good, I have a doubt this TV came with the fault of damaged LEDs which made it protect and not turn on the backlight (tv un40f5000ag SAMSUNG), when I opened it I noticed that the TV had already been "repaired" which was not so, I I found 3 damaged LEDs, I replaced them and the backlight turned on, but when I came from another place the last one to open it did not replace the acrylics (or I don't know what material it is or what they are called ...) that are placed on top of the LEDs, the question I have is how that acrylic could be replaced, since the light emitted by the LEDs is not stronger and white circles appear on the screen. Thanks in advance.

Hi friction, late but sure, I saw that in the open market they sold those lentils, I could not find it, everything you try is going to go wrong ... those diffusers let the light out for the sides and down so that it bounces on the White plastic that goes under the LEDs, you can buy a used strip, whether it works or not, you take out the lenses and voila, what country are you from? In the free market there are many who sell used LED strips, you can take out the lens and paste it with fastik, the height and centering are critical to not see glares, you can measure the height in one that is original, You can also cut the entire led and paste it on the strip I found them :) http://articulo.mercadolibre.com.ar/MLA-664086528-lente-optica-para-tv-led-backlight-por-unidad-_JM

I call them light expanders, that is because of the issue of the angle of light emitted by the LEDs, if it were not for these acrylics on the whole TV you will see points of light in white and it is horrible, if or if you have to put these I also saw them in ML tobias: D

Hello, I would advise you to go to any service in the area and ask or buy a diffuser so your panel looks like it should be. regards