I had a similar issue. LG TV went blank but when I shine a flashlight on the screen I could see shadows. when I first turn the tv on I could see the LG sign and then the tv goes blank. Later I found out that 2 of the 3 backlight- strips went bad. I assume if one strip goes bad the power board inside the tv will detect that, and cut the power off to all the light stips.
It could also be that the power board is not sending voltage to the backlight. if you have a voltmeter, you could easily check the power output on the main power board. if you don’t have output voltage, then your board is bad. I found used one for $30 on Amazon. if you do have output voltage then your backlight is probably bad. backlights are cheap and can be easily replaced.
when attempting a repair, make sure that you don’t damage the front screen as it is fragile and can be easily damaged.
find parts using the TV’s model number and the number of the part that you want to replace. part numbers can be found on the actual parts.
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
- de Will
No picture but has a sound on tv
- de jahjah1231
TV screen goes black when watching Netflix or YouTube..never happen when watching regular TV or DVD...what causes that?
- de Chantelle Levy
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
- de Veli Ndumiso Vodloza
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.
- de oldturkey03
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