Watching tv and the screen just went black have tried turning off and on and unplugging audio still works fine I can change channels and hear different audio but no pictures through cable component or hdmi.
ctruman72,
I don't know which model you have but if you hold a flashlight to the screen do you see movement and images? If you do the backlight has failed. If you do not see images you may have a main control board problem. Did the service tech tell you which board? You may find the board on the internet. Use the tv make and model along with the board part number with a google search.
Comentarios:
How do I fix the blacklight?
- Por Darlene
Hi Darlene,
How did you diagnosed the error? If you hold a flashlight to the screen, do you seen any pictures?
- Por Pierre
As stated above if you hold a light to it and you still see pictures you have a bad backlight inverter (think of it as a starter for the old style floresent lights.
As stated above just find model and serial # and google parts there are several online places that offer boards inverters ECT.
Just fyi if ya find bad capacitor or such I usually go up by 5 so that's just my 2 cents
- Por jamie sturm
I have never had a broken TV before--LCD or any other type. But the flashlight diagnosis worked--I could see the images. Thank you--I'll look into that rather than replacing it or making an expensive repair call.
- Por dojnd
How do I get the back light fix... I can see images with the help of flashlight
- Por ani etukudo
I have a 65" LG, OLED, 4K Ultra HD, Smart TV. I have had this TV for 1 month. The screen just went blank / black but everything else was working on it.... sound, apps pages, etc. but I could not get a video or satellite image at all. I decided to try resetting the TV to it's original setting and it worked. I have a picture again. It is a complete pain as I now have to go back and set everything up again. But at least I can watch the TV again. Hope this helps some or all of you!!!
Comentarios:
Genius!! This fix worked!!
- Por pkrohan
How do you reset the settings if you can't see anything on screen? Is there a manual reset that can be accessed through the control buttons? What is the process used to access the manual reset?
- Por D. Mark French
When my TV does this I can only "not see" a broadcast picture but everything else shows up. I just click on my remote to open up settings on my tv. That all shows up. I have had to reset my TV 2 times now to get the picture back. The last time I had it happen, I did not have time to mess with it so I just turned it off. The next morning when I turned the TV back on it was all working again,
This sort of makes me wonder if maybe something in the TV is over heating causing the problem??? Once it has time to cool down it goes back to working as normal??? I have no clue. But, the screen has gone black for video, satellite or broadcast on 3 different occasions not and I have been able to get it back each time.
D. Mark French, if you are having the same problem I am.... You should still be able to use your remote to navigate thru you settings for the TV...... If not, I am sorry and wish you luck!! This is all so frustrating!
- Por kmisak
i think i'm having the same problem as you with my LG. Just the "broadcast" image was not working, as well as everytime i tried to open a video file on my USB pen. It seemed that the screen went blank only when some kind of video format was playing. The problem is not related to the backlight, because i can see it is working fine. I tried to do a factory reset to fix it, but now i can't get past the 3rd stage of the configuration process - I select the language, then i select the country, then it asks which environment to use - "home" or "store". When i choose "home", it goes blank... i don't know what to do, I already opened the TV and i didn't see anything out of the usual.
- Por nsa
- Por ithelpdesk 720
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.
Comentarios:
It's the led backlight has gone bad. Company will ask to change the entire panel assembly , for huge amount of money. Or ask to buy a Annual maintenance contract. Still expensive. Simply go to AliExpress website, buy led backlight bars and replace them. Or u can also buy individual LEDs there, and reflow/hot air solder it yourself. Search for LG Innotek LEDs.
- Por Utsav
Had a 42 “ LG and after about 18 months screen would go black but sound was still on , rang LG but wouldn’t do anything as it was out of warranty. After 5 years of messing around with it (turning it off and on ) decided to buy a 50” Panasonic which is brilliant ,in the meantime I thought I would take the back off the LG and give it a good clean and push all the connections on securely and tighten all screws ( some of which were quite loose ) we now have the LG on the kitchen wall and it has not gone off at all and that’s after 1 week , it worked for me maybe it could work for you ,good luck
LG seems to have a problem with backlight, you'll feel when it goes black on screen the back of the tv is super hot.
SOLUTION: Change the picture mode to “Standard", then make sure that your backlight setting is at it lowest.
That should do the trick, and it will never switch off, if this also fails then replace the backlight.
Comentarios:
The back of my Tv isn’t hot at all, I turned it on and after about 10 minutes, the screen just turned black. I have trying turning it off and on. Unplugging it and plugging it back it. I can still hear audio but it is very frustrating not being able to see anything other than a black screen
- Por Izzy
This worked for me. The TV was glitching and going black so stayed on long enough to change the setting and now it’s workong fine. There’s no option for backlight setting though
- Por jessica_bills
I am not a qualified electronic engineer but after extensive research in Google and other forums, I can say that this could be a problem of ‘backlight'. This happens due to various reasons. Power supply failure to backlight LEDs. Bad LED or strip and maybe other fault.
Well not sure of this will work for every one but my lg t.v just went black when my son turned it on to play x box. I looked online every one was saying buy some chip. I just unplugged the power cord from my t.v and plugged it back in and it turned right on.
Think smarter not harder
Most of the smart TV'S comes with blinking (LED) codes, but meaning of these blinking codes differs from manufacturers to manufacturers. Just Google it (manufacturer / brand / model) and you may find the problem. Most probably this problem is related to power supply (bulged capacitor).
Rep: 1
Press volume down key and power button together simultaneously switch OFF main plug and then put it ON again
That's it your TV is on.
I did this with my TV and seriously it works.
Rep: 1
Have the same problem. When switch on the tv could get audio. But panel show only black screen for video and also no tv menu is seen so could not do resetting things. Panel shows usual blue light for ON. Once able to locate possible problem then it could be easy to isolate and fix the problem.
Comentarios:
espotter 2010 okay so you got it fixed? You are looking for a fix? What have you checked? Make and model or your TV?
- Por oldturkey03
This could be due to back light problem. Back light problem is due to either failed back light power supply or back light itself. Back light fails when one or more LED fails in one or more row.
Depending upon model / brand power supply could be separate or built in with main power board.
- Por Jignesh Jani
Rep: 1
My 50 inch LG has sound
but no Picture , I'm watching my TV through
Roku.. And I have a Universal remote control
How can , I get to the Menu and Reset.. my power button off and my TV still on.. Can this issue be repaired
Thank you!
Rep: 1
I would probably say backlight problem, check with a torch and see if you can see an image on the screen when it’s on.. google tv led backlight failure.. it can be repaired but needs to be diagnosed first.
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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
- Por Will
No picture but has a sound on tv
- Por jahjah1231
TV screen goes black when watching Netflix or YouTube..never happen when watching regular TV or DVD...what causes that?
- Por 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
- Por 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.
- Por oldturkey03
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