More than likely you have 1 or more LED's that are shorted out. When this happens the LED strip will draw too many amps and the board will shut down all LED lights as an over-amp precaution. This happened to my 50" LG and I was able to fix it at no cost by removing that particular LED strip from the circuit. It is not a difficult repair, but does require someone to pretty much completely disassemble the TV. If you want to attempt the repair, here is a Youtube video that provides some instructions,
https://www.youtube.com/watch?v=YgaL6X6e...
You can replace the strip that is bad for about $50 or just remove it from the circuit. If you just have one bad strip, you probably won't notice any change in picture quality after it is removed. Be careful if you disassemble the TV. Even if it is unplugged it will still have capacitors that carry a high charge of voltage.
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1 -12--17 Just bought lg 65" super uhd tv. 2 days old. Screen goes black. Returned for a new one two weeks later same thing returning this one also thank God it happen within the 30 days
crwdns2934271:0crwdnd2934271:0 Will crwdne2934271:0
No picture but has a sound on tv
crwdns2934271:0crwdnd2934271:0 jahjah1231 crwdne2934271:0
TV screen goes black when watching Netflix or YouTube..never happen when watching regular TV or DVD...what causes that?
crwdns2934271:0crwdnd2934271:0 Chantelle Levy crwdne2934271:0
this bullshit of a tv i jus switched it on now and the screen is jus black not showing anything but the sound is perfect,what is that?? where can i find someone to fix it
crwdns2934271:0crwdnd2934271:0 Veli Ndumiso Vodloza crwdne2934271:0
Veli Ndumiso Vodloza instead of ranting on here, it might actually be better if you ask your own question instead of making a comment to a 2 year old question. Go on here https://www.ifixit.com/Answers/Ask and ask a proper question. Give us the make and model of your TV and describe what is wrong with it. Let us also know if anything happened to it and what you have tried to fix it.
crwdns2934271:0crwdnd2934271:0 oldturkey03 crwdne2934271:0
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