Question about LG 47LH40 47 in. LCD HDTV

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My LG LH40 47Inch screen shows logo then gos off

First,only half picture appeared on screen (with sound) and went off after apx 10 seconds. Now when I turn it on only the LG logo,very faintly,appears along with the channel number and station name,(No sound)then gos off after apx 5-10 seconds. I have cable and this cord works fine with other TV's.

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  • LG Master
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Main board fault. Contact any service technician, or the authorized service center for LG. The second said will be the best.
Gopakumar Gopalan Google

Posted on Apr 01, 2014

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: no picture but has sound

hey i think i know your solution on how to fix that you should get another tv lol jp go to my web site and I'll tell you a couple of methods to try.its meatspin.com

Posted on Feb 28, 2009

  • 2 Answers

SOURCE: frozen picture on LG LCD 37"

Try One of your working TVS and connect it to your cable outlet of the TV that is having problems. If that TV Does not work then there may be a degraded fitting or the Leg coming of the splitter to that outlet could have a Low Signal Problem
Next Take the First TV that was not working properly and put it on the cable outlet of one of the TVs that is working properly and if the TV set works on that Channel then you know it is not your TV that it must be the cable

Posted on Feb 28, 2009

  • 1 Answer

SOURCE: I have a LG plasma T.V., model 42PB4D. Black box/middle of screen

Try this:

In the menu go to CC and set the TV to CC1 as this is a text box appearing for captions. Hope this works!

Posted on Jun 26, 2009

SD Tech
  • 14553 Answers

SOURCE: Black box appears in middle of screen

go into the menu and look at the closed caption option----if TEXT is highlighted--this is your problem---select CC! or if it has it OFF.The TEXT will only appear on certain channels and it most likely was activated by someone changing the closed caption options. If this has been helpful give me a vote to let me know.

Posted on Aug 09, 2009

welcomejee
  • 10594 Answers

SOURCE: my LG HD tv screen suddenly went green. sound is

Hi,
I disagree with info provided, if screen of your LG lcd tv becomes green that means inverter board is working and lcd tv does not have convergence ICs.
Please unplug tv from ac wall socket for minute to get it reset, replug back in and turn it On and check its picture.
If still showing green screen then change input source with remote, if tv shows same green screen on all inputs that means its either lcd panel problem or digital signal processor got bad loacted on main board. Local tv repairman is needed to confirm and fix it.
Thanks.

Posted on Jul 23, 2010

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1 Answer

Tv turns on and screen flickers on for a second and then turns off, whats the issue?


Sounds like 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.

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What electrolytic capacitors need changing on a LG W2242S


Start with any which are showing any signs of doming or bulging and any near a source of heat. Use height temp replacements.

Jul 18, 2014 | LG Computers & Internet

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Hello, I have a lg lcd monitor. w1941s model. when I start my computer, it work for sometime. then it goes blank showing only the LG logo. then the power button doesnot work. it hang up glowing. again


If your LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life of your monitor or TV by several years.
Take it to a repair shop.

Apr 06, 2014 | LG Computers & Internet

1 Answer

Sony Bravia - no picture, no sound. Just a blank screen. We were watching a show and the screen went blank and no sound.


First thing to try: unplug from the wall; count to ten; plug back in; try again

Second thing to try: unplug from the wall; count to 10,000 (or wait 10 minutes or so); plug back in; try again

#1 worked for me when it would power on with no video, no sound, just small green light + white logo

Dec 06, 2010 | Sony KDF-E42A10 42 in. LCD Television

1 Answer

Pc does start but monitor is blank but its light is on


What connection are u using? DVI to DVI? VGA to VGA? or are u using DVI+ adapter to change the source to VGA?

Nov 21, 2008 | LG L1717S-BN 17" LCD Monitor

1 Answer

Sound but No Picture


Perhaps your remote is set to video recorder?  Try that first, and if no response, try calling up a menu on your TV and look for the Picture Settings.
Good Luck.

Nov 03, 2007 | LG 37LP1D 37 in. LCD Television

1 Answer

Screen split with black bar through center, top of picture shows in bottom


It sounds as you desribe, the vertical output IC and or the b+ feed capacitor off the Hi voltage transformer feeding the vert. IC its required voltage. Not a really hard job to replace, but not for a handi person to do. This should be left to the professional, as there are no user serviceable parts inside this set and with the HI voltage and the safety issues its best to call somesone to assist you with this repair. Good Luck

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