Replace an LG 49UH850V cracked diffuser

[sdancer75]

The topmost sheet, the thin one, is the back polarizer, doesn't matter about 3D or non 3D..

excellent !

[Davi.p]

The topmost sheet, the thin one, is the back polarizer, doesn't matter about 3D or non 3D..

[sdancer75]

Thanks to both of you :-)

[EazyBone]

Yea as davi says and I thought I implied as well, it's for the light. It will work most likely. I've found some of them have different thicknesses, but they have still always worked even with the difference.

The sheet or sheets that are on top of the diffuser should be saved for the same TV, don't transfer a different tvs sheets to the 3d tv though.

[Davi.p]

but i arleady answered this, 3D or non 3D doesn't matter, the diffuser is only to diffuse the light!

[sdancer75]

I replace diffusers from different tvs all the time. They work fine. They have to be edgelit diffusers as the other ones which have full array won't work.
I would replace the LEDs also .. they are generally like 20$ on eBay or cheaper if you do AliExpress.

Yes edgelit diffuser I meant from the begging, I didn't clarify this sorry. So, as your are saying that 3d is not important in this case, diffuser has the same design as non-3d TVs.

[sdancer75]

3D or not 3D doesn't apply, the leds normally do not heat too much, the fact that them has done means them are not perfect or the power board has a problem, my brother's Samsung developed trough last years some halos on the bottom, then one day leds failed, maybe two, this means the test of few seconds is not enough to say leds are ok, furthernore leds testers do not apply much current..
long story short: replace leds.

Yes,maybe the LEDs need to be replaced but the 3D reference here applies to the diffuser and not for the LEDs. So the question was if a 3d TV uses a diffuser with a special design, specifically for TVs that are able to view 3D pictures.

[Davi.p]

3D or not 3D doesn't apply, the leds normally do not heat too much, the fact that them has done means them are not perfect or the power board has a problem, my brother's Samsung developed trough last years some halos on the bottom, then one day leds failed, maybe two, this means the test of few seconds is not enough to say leds are ok, furthernore leds testers do not apply much current..
long story short: replace leds.

[EazyBone]

I replace diffusers from different tvs all the time. They work fine. They have to be edgelit diffusers as the other ones which have full array won't work.
I would replace the LEDs also .. they are generally like 20$ on eBay or cheaper if you do AliExpress.

[sdancer75]

This specific model, LG 49UH850V, is 3D. The problem here is that the diffuser has been cracked at the bottom, where the LED strip is installed, due to the heat from the LEDs. This is a common problem for many LGs and Samsung TVs.

The questions here are

1) Can I replace the diffuser from a non-3D LG TV with the same size (exact fit)?
2) If I replace the diffuser with the original part, do I have to replace the LED strips also? They work as expected, but some technicians recommend replacing them together.

Regards,