Question about LG 42LB5600 42" LED TV 1920x1080, 60 Hz, HDTV

1 Answer

Backlight went out on my Lg 42lb5600

I replaced the main board/ led driver. I have sound and can see the image with a flashlight

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  • 45 Answers

Check that all the led's are working, it only takes one not to work

Posted on May 02, 2019

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6 Suggested Answers

6ya6ya
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SOURCE:

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Posted on Jan 02, 2017

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gopakumarg43
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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

  • 727 Answers

SOURCE: I have a Vizio E550i-b2 55 LED TV. I have no LED backlight. When I hold a flashlight to the screen I can see the images and I have sound. I was going to replace the LED driver? Thoughts??

Hi Jimmy,
If I may suggest, before changing, please check that the inverter board is producing the necessary voltage to drive the backlights or not. If the board is producing the necessary power and still the backlight is not coming on, there is possibility that some of the LEDs in the backlight array have failed.

Posted on May 04, 2016

Testimonial: "No matter which HDMI input I use the screen is totally black again. The apple tv works fine on a different Vizio TV with a different HDMI cable."

olga8004
  • 7 Answers

SOURCE: No back-light on LG LED TV

That means dead transformer supply chain. Replacing search not possible, donor Yes

Posted on Aug 08, 2016

neutrom_71
  • 1 Answer

SOURCE: Model 50LA6970-UE LED. Has sound, but why no picture?

Hi Paul i have the same problem how do you fix it?

Posted on Oct 07, 2016

gopakumarg43
  • 76140 Answers

SOURCE: LG 50la6970 no backlight i have sound and dark images!

Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Posted on Oct 08, 2016

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1 Answer

LG 42LB5600 has sound but no picture or LED backlights


If you shine a flashlight on the screen can you see that theres a picture on the screen but your just not seeing it because of the dead backlights? Most of the time, when there is sound but no picture its failed backlights, this can be a few different things, a failure in the power supply, a failure in the LED backlight driver board, or the LED's themselves have failed. Your only option is to take it to somewhere that can repair it, or toss parts at it until it works, or just toss it and buy a new TV. Most TV's made today are not really designed to be repaired or repairable. But someone with enough skill and experience can usually fix that issue, i do it all the time. But you have to consider the cost of repair versus a new TV, they are so much cheaper now!

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Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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Fault at its main digital 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.

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1 Answer

LG 50la6970 no backlight i have sound and dark images!


Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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1 Answer

How do I fix my LCD TV?


If you hold a flashlight up to the screen do you see any image or video

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2 Answers

Model 50LA6970-UE LED. Has sound, but why no picture?


Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced.

Dec 17, 2015 | LG Televison & Video

1 Answer

Lg 50ln5600 backlight issue


Check whether the back-light start voltage [control voltage] comes to the backlight inverter section of the power board; from the main board. It sounds that that voltage does not come from the main board, after the firmware has been loaded up. If so the main board will have the fault. Contact any service technician.

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The picture on my LED TV went out abruptly and wont come back on. I'm getting sound, but no picture, besides replacing the LED driver/power board (I did), what can be done to fix it?


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
In some models of LCD TVS; the backlight inverter and its T'Con board will be a part of the panel itself, and will be a built-in type inside the LCD panel. If so, they can't be replaced. In this case; a panel replacement is the only repair. For some other models, the backlight inverter section circuit will be a part of the main power supply regulator [SMPS]. To such sets, the power supply section circuit too should be troubles hooted. Contact any service technician. The circuit will differ with models and versions.
Type in the brand name of your device, in the search box [at the top right] of the display window and the Search will start at once as you type in, and will show you all the related posts. It will make surf easy.

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