Question about LG 50LA6200 50" 1080p 3D Smart TV 120Hz Dual Core 3D Direct LED Mount Bundle

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Have an LG 50LA 6200 Tv. When you turn it on it flashes the LG Logo for a second then goes dark. Audio is working and Video is there if you look real close but is not lit up. Replaced the Power Supply

No Backlit. Replaced Power Supply Board

Posted by Larry Bloom on

  • Tommy
    Tommy May 26, 2015

    Did replacing the power supply board work?

  • Tommy
    Tommy May 26, 2015

    My 50ga6400 started doing the same thing a month ago. Backlight led turns on for welcome lg "life's good" then goes out. Using a flashlight I can see that the LCD is has images. I'm finding most suggest to replace the led driver board.

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1 Answer

johnny rebel

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  • LG Master
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Replace backlight inverter

Posted on May 26, 2015

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freetek

Steve Allison

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SOURCE: LG 47" LCD FLAT SCREEN

IF IT WASNT DIGITAL HD I WOULD HAVE SUSPECTED HIGH VOLTAGE POWER SUPPLY BUT THAT DOES NOT EXIST HERE.
Well, not completely true; the fluorescent backlight is still a high voltage device, even if only hundreds of volts instead of kilovolts, and either the lamp(s) or the power supply for it (them) is causing the dropout of your picture. When it does it next time, look at the screen from various angles, I think you will see that video content is still there.  

Posted on Sep 14, 2008

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Anonymous

  • 1 Answer

SOURCE: LG 42PX4MVH PLASMA TV - Sound but no picture.

I have the same issue with my LG 42PC3DVA and I narrowed it down to the Y SUS board. After a little research there are a few items that are prone to go. The ceramic fuses (as you found), sometimes the capacitors on the Y SUS, Z SUS, and power supply go along with them You can tell because thy will be bulged at the top instead of flat. I replaced a few of my capacitors - they are only $0.89 each so it was MUCH cheaper than a board.

The other thing that is common on the Y SUS in particular are the FETs (also called MOSFET). They can be replaced if you are good with a soldering gun but they are static sensitive so be grounded. They are also a bit tricky to test so you may want to do some research on how to determine if this is the issue... or you can just replace the whole board.

Posted on Oct 28, 2009

Anonymous

  • 32 Answers

SOURCE: Plasma Screen No VIdeo, pop / flash as well.

main board problem

Posted on Jan 07, 2010

Paul

  • 381 Answers

SOURCE: LG 42 Plasma try's to turn on but just goes back into "stanby" ?

Check to see if you get Va and Vs voltages from the power supply. There should be some wires running to the y-sus. A couple of those wires will be labeled va and vs. Are they present? There will be a sticker stuck to the panel somewhere telling you what they should be.

Posted on Mar 26, 2010

Anonymous

  • 28 Answers

SOURCE: my lg plasma tv stays on standby

is you already change the power board,is possible
your y board is out...is a big board on the left side of the tv

Posted on May 19, 2010

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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://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. 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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http://electronicshelponline.blogspot.com/
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http://electronicshelponline.blogspot.com/
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