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42in lcd legend light turns on but the TV screen is black

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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.

Posted on Dec 23, 2016

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Posted on Jan 02, 2017

tvtek
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SOURCE: LG 42in LCD Television - turning unit off

The amount of standyby power consumtion is minimal. The only way to turn it off completly is to disconnect the power from the TV. This will however increase your start up time when you want to use the TV.

Posted on Nov 30, 2007

jrweighing
  • 183 Answers

SOURCE: why does it take 10 minutes for my LCD Legend tv

Sounds like you have a faulty capacitor on your invertor..Gently press on the screen when there is no picture.is there light on the screen? If so, there is backlight but no video..hence a mainboard or power supply problem..If there is no backlight then the problem is the invertors or the power supply not supplying 24volts. The invertor is located on left or right hand side of screen..Check that all connections are secured and not loose.Check that the power supply capacitor tops on the power supply do not have bulging tops..If not, and voltage is reaching the invertor, then remove the invertor and check for bad solder joints and leaking capacitors.

Posted on Oct 17, 2009

  • 458 Answers

SOURCE: 3 year old 42in LG LCD TV scrren went blank

You will either have a fault with the inverter board which drives the backlights or a faulty backlight in the screen. If the problem is a backlight then a replacement screen is the only cure. One or the other is breaking down after it has been opn for a certain period of time, have an engineer call out & check with a tester if it is a screen problem.

Posted on Dec 19, 2009

  • 1 Answer

SOURCE: Hi we have a 42in philips matchline flat tv. When ...

mine is doing the same.... any solution to fix this problem?

Posted on Sep 27, 2010

  • 96 Answers

SOURCE: My 42in Vizio LCD has sound but no picture.

Make sure in the back of the TV the "picture cords" or A/V cables are properly fitted.... Hope this helps :)

Posted on Jan 08, 2011

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LG 42in Class 1080p 120Hz LCD HDTV red light stays


Hi
Your tv set is stuck in the standby mode as a components went shortcircuit in one of the power supply rails and should be serviced by qualified personnel.

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1 Answer

I have a vizio 42in. lcd tv and the screen is black when tv is on but hear the what ever program is on.Can it be fixed?


Firstly check for loose connections between the video source and tv e.g dvd player/set top box

If still no picture it could be that the lcd panel inside the tv has a faulty connection for this you will need a technician to come out and make the repair this sounds more expensive than it usually is and is not a major cause for alarm.

Hope you have some success.

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My 42in Vizio LCD has sound but no picture. Screen starts blue when it turns on then goes to black with only sound.


Make sure in the back of the TV the "picture cords" or A/V cables are properly fitted.... Hope this helps :)

Jan 08, 2011 | Vizio 42 in. LCD TV

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Do you have audio? Anyway, you will need to replace the signal board. Ask a TV tech for pricing and labor! Sorry!

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I have the same problem.. did you ever get it figured out?

Jan 26, 2010 | Philips Televison & Video

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3 year old 42in LG LCD TV scrren went blank


You will either have a fault with the inverter board which drives the backlights or a faulty backlight in the screen. If the problem is a backlight then a replacement screen is the only cure. One or the other is breaking down after it has been opn for a certain period of time, have an engineer call out & check with a tester if it is a screen problem.

Dec 19, 2009 | LG 42LC2D 42 in. LCD HDTV

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Lcd projection tv 42in


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Jan 13, 2009 | Televison & Video

1 Answer

LG 42in LCD Television - turning unit off


The amount of standyby power consumtion is minimal. The only way to turn it off completly is to disconnect the power from the TV. This will however increase your start up time when you want to use the TV.

Nov 28, 2007 | LG 42LC2D 42 in. LCD HDTV

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