LG 42LE4500 Sporadic Black screen

[anotherdude]

My sisters LG started playing up about January, with the screen going off and sound still being present after about a hours worth of viewing.

Brought it to my house to have a look (back in feb) and couldn't replicate the problem in the week I had it, with the TV being left on with a source connected for upto 12 hours at a time.

Now when she collected it from me again and took it home the problem didn't reoccur, that was until the past week or 2 that it's now came back again.

Anyone any idea on what this could be and why it disappears randomly?

[budm]

Re: LG 42LE4500 Sporadic Black screen

Since it is LED backlights TV, I would expect bad LEDs which is common failure for TV with LEDs for backlights.
So when it stops working, the backlights are off but you can still hear the sound.
I would try decreasing the backlights level in the user on screen menu setup, you may have to do this on all the input setup since some TV will allow to have different level for each input, to see if the backlights will stay on just to see without opening up the TV.

[anotherdude]

Re: LG 42LE4500 Sporadic Black screen

Since it is LED backlights TV, I would expect bad LEDs which is common failure for TV with LEDs for backlights.
So when it stops working, the backlights are off but you can still hear the sound.
I would try decreasing the backlights level in the user on screen menu setup, you may have to do this on all the input setup since some TV will allow to have different level for each input, to see if the backlights will stay on just to see without opening up the TV.

So can LEDs fail in this way, I was under the impression that if they fail, they stay off permanently.

TV's now black screening every 10 seconds or so, has progressed to this since earlier today (posted this thread without speaking to her again). She did manage to check the picture settings though

Backlight 70
Contrast 100
Brightness 50

No idea why the contrast would be at 100, can't get any further until tomorrow now.

Thanks for the information

[ReeceyBurger123]

Re: LG 42LE4500 Sporadic Black screen

This a slimline Tv ? I had a 42" Slim Lg with an intermittent Led.

[anotherdude]

Re: LG 42LE4500 Sporadic Black screen

This a slimline Tv ? I had a 42" Slim Lg with an intermittent Led.

35mm thickness according to the LG website, so I'd say so