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How do I get my LED TV to start working?

There is backlight, but no picture and no sound.

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  • Mike Grieshop
    Mike Grieshop May 19, 2017

    Verify you're using the right input and the device is on? Switch device to another input?

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1 Answer

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  • Televison & ... Master
  • 3,187 Answers

Depending on the model, if the backlight has come on but nothing else then the main av board has fun into a fault, some models have a rest sequence to use on the original tv remote to reset to factory settings, if your model does not have this feature, then turn the power off for 10 min and plug power on and holding down the either of these, power button or menu and select. some times these work to reboot.

Posted on May 19, 2017

6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

  • 139 Answers

SOURCE: LCT 2662 after caps replaced I loose backlight.

make sure the caps you installed are the exact replacements. Changing voltage capacity or timing will cause the circuit to fail.

Posted on Mar 06, 2009

  • 195 Answers

SOURCE: Samsunb 4051: TV screen turns off sound stays on.

Most likely this set has an "integrated" inverter, as most samsungs do--and this DOES sound like an inverter problem. Make SURE thought, there are no more bad "10 volt" caps on the power supply...ALL of them need to be replaced no matter HOW they look.

Posted on Oct 15, 2009

  • 1 Answer

SOURCE: LCD TV Has Sound, Backlights Work, but No Picture

I have been having the same problem with my LG. people say there are bad capacitors on the power supply board. I don't have the know how to replace them and don't have the money to pay. I can get mine to work by blowing hot air with a hair dryer into the back of my tv through the vents over the board. Heat it up for a couple minutes and turn it off and then back on and the picture comes back. I just never turn the set off now.

Posted on Sep 09, 2012

  • 1 Answer

SOURCE: Vizio m550nv backlight won't work

This TV comes with a remote that connects to the TV via Bluetooth. It remembers which equipment is connected to the various inputs, and automatically changes the controls to match the input equipment - really nice! I found that it will control all my equipment, and since it works via bluetooth, you don't have to have direct line-of-sight to the TV. Wish that the bluetooth part worked for my satellite equipement too! Programmable remotes will operate this TV, but depending on how old they are, they may not be able to hit all the features of the tv - our older directv remotes will operate the basic features, but only the newer models will change the input source - so you may want to use the remote that came with the TV. We have smaller kids, and wanted to limit their use of the tv remote, because it has a slide-out keyboard similar to those on some cell phones to make posting to facebook (one of the apps that comes on the tv) easy. Since our youngest is 5, we thought it might be best to keep that remote out of harm's way.

More Detail :
http://tv.babybi.com/detail.php?id_detail=VIZIO-M550NV-55-inch-Full-HD-1080p-120Hz-LED-LCD-HDTV-id126a

Posted on Sep 26, 2012

gopakumarg43
  • 74136 Answers

SOURCE: lg led tv backlight

Fault with its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Posted on Feb 05, 2015

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1 Answer

My LG tv (Model number: 32LS3410-UB) has sound, but no picture. When I do the flashlight test I can see a very dark image on the screen. Will replacing the LED driver fix this problem?


If you already tested with the flashlight which is the first step in the blank screen with sound fault then you have to test the LED Backlight supply voltages if you are familiar and good in the electronic repair. First you have to check if bulging capacitors for the LED Backlight drive voltage circuit, replace them. If capacitors are good then you have check the backlight LEDs. The flashlight test proves that the power supply is good and TV is working fine because the sound is ok and picture is fine. Attached videos and links may help you for the repair and replacement of backlight LED strips or LEDs itself depending on the type of LED strips used in your model.
https://www.youtube.com/watch?v=Z1DEkSguWtg
https://www.youtube.com/watch?v=YgaL6X6eSaU
https://www.youtube.com/watch?v=EZVQKEp6jxk
https://www.youtube.com/watch?v=T2FboV-1PJg
https://www.youtube.com/watch?v=2pyuXwNkBMA






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1 Answer

Black Screen on LG LED TV. From what I can see, I have not backlight, but I have sound and I can see the picture with a flashlight...TV flashes on start up. Is the LED panel or the T-conn board ??.


LED backlight of your TV might gone. If you are a good service technician and know about electronic repair, check LED Driver voltage, if voltages are normal then you can test your LED backlight by applying external voltage to the LED backlight to reconfirm. Link to download Service Manual: https://www.scribd.com/doc/159016486/LGE-47LV4400-Service-Manual-R01-1 LGE 47LV4400 Service Manual R01 1

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1 Answer

No backlight


The backlight is burned out or the supply voltage to it is making a poor connection or in most cases both need to be replaced, about $500.00.

Aug 12, 2016 | Televison & Video

1 Answer

Samsung TV


If you see a picture with the flashlight you can rule out the T-Con board. It's working. So the led driver board is the problem. TV Parts Universal TV Stands DLP Chips ShopJimmy Go here for replacement parts.

Aug 07, 2016 | Samsung Televison & Video

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Backlight for tv


One or more of the LED backlight strips behind the LCD have failed. Difficult and sometimes expensive to fix.

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1 Answer

FIGURE OUT WHERE TO START DIAGNOSES


https://www.youtube.com/watch?v=sDwZQIZB... try this video 1st.sounds like your problem.

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2 Answers

My samsung ln46c630k1fxza 46 inch t v that has no picture or backlights, i replaced the t-con board, that didnt fix the problem. can you tell me how to fix the problem?


Samsung LED TV Model UN46D6400UFxza has sound but ...

? 2:16
https://www.youtube.com/watch?v=s2hLKzdyDWU
Oct 21, 2013 - Uploaded by Clif Venom
Samsung LED TV Model UN46D6400UFxza has sound but no picture ... LCD & LED TV Repair - No Image ...Missing: ln46c630k1fxza

Samsung LCD TV screen went black (audio on, no picture)



Dec 20, 2015 | Samsung Televison & Video

1 Answer

Lcd tv has sound no picture


Hi Chad,
Since you are getting the sound, the main board seems ok. Please show a flashlight on the screen, you should be able to see the picture there. If it is so, the backlights in your set are not working. Most LED TVs have LED driver circuit on the power board now days. Here a word of caution, there are two reasons for failed backlights. First the LED driving circuit and second the backlight itself. Which one has in your case, let some TV Tech decide it. In both the conditions your TV should be repairable.
Good luck

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