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I have an LG TV model number 50ln5100 my screen went black I did a flashlight test and saw movement in the background what part do I need to get my TV working again?

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  • LG Master
  • 9,587 Answers

The LED backlight driver controls the operation of the white light. It may be incorporated in the main board or the power supply board. It can also be a stand-alone board. Depends on the model. You can find the parts you need from here: TV Parts Universal TV Stands DLP Chips ShopJimmy

Posted on Dec 21, 2016

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6ya6ya
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Posted on Jan 02, 2017

SOURCE: My t.v has blacked screen, how can I fix this. I am technological inclined.

most likely you have a failed backlight inverter, but there could be other issues as well. IF you have access to a multimeter, you will first you want to verify that the 24vcd output is present from the power supply. Second, you want to verify that you are getting the "backlight on" signal from the main board which should be around 3vdc. There should be a terminal on the power supply or inverter board that says "BL ON" or "lamps". If it is your inverter that has failed, the good thing is that they are usually very cheap and easy to replace.

Posted on Sep 10, 2012

phil_hick883
  • 890 Answers

SOURCE: How can I get my backlights to work on Samsung LCD tv

If your not a TV Engineer , get one to look at it , as you may keep changing the incorrect part.

Posted on Mar 14, 2015

gopakumarg43
  • 74118 Answers

SOURCE: 47' (sic) LED TV, model number m470vse. Why doesn't the backlight work?

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 trouble shoot. Contact any service technician. The circuit will differ with models and versions.

Posted on May 30, 2015

  • 1680 Answers

SOURCE: Repairing TV,sound works, see screen w/flashlight. However no backlights show,unsure what board I need to replace I have a LG 50LN5100. What is the actual board that needs replacement picture below.

Check out the links below to eliminate the Inverter circuit
and / or LVDS board
Instruction for LT30FMP
26150281-a3z50hdvc01hdf5dkelcuavu-4-0.png

Posted on Apr 02, 2016

gopakumarg43
  • 74118 Answers

SOURCE: Repairing Tv

T'Con board fault. Check and replace it.
http://electronicshelponline.blogspot.com/

Posted on Jul 28, 2016

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I have a problem with an lg tv. It a 50 led tv with a thin black horizontal line across the screen and below the line it alternated every 5 seconds between clear and distorted on 2/3 of the screen.


There are a few videos on YouTube about trying to repair flat-screen TVs. Some of the things to try are reflowing the solder-joints with a heat-gun, capacitor replacement, and re-seating the cable connections.

Feb 11, 2017 | LG Cell Phones

1 Answer

I have a LG TV model number 50ln5100 The screen went black I did a flashlight test and could see the picture in the background I have an LED TV so there's no backlight inverter what part do I need


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://electro-medical.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...

Dec 21, 2016 | LG Televison & Video

1 Answer

I have a LG tv model 50LN5100-UB. The picture went out. I did the flashlight test and saw the menu screen. I replaced the power supply/ LED board but it didnt fix the problem.


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/
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.

May 12, 2016 | LG Televison & Video

1 Answer

I have an Lg 50ln5100, no picture + sound,+ flashlight test. Tested LED connection and got 78 for the + on both. Is 78 good for this tv? If so then I am assuming that I need to replace the LED's? TIA


If you wish to get some details; check the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
Faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
Search the site by type in the "brand name" to your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

May 02, 2016 | LG Televison & Video

1 Answer

How do I get the picture back on my LG LED 50 flat screen? Sound works, no picture.


-You have a bad panel. Led arrays internal to the panel are defective. Replacement cost exceeds economical repair.

Apr 27, 2015 | LG Televison & Video

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