Question about LG 42LC2D 42 in. LCD HDTV

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I have a 47LE5400 that is not working. When powering the tv the screen shows the LG logo, the channel that is playing and after 3-5 seconds the display goes black. Could tell me how I can troublesho

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  • LG Master
  • 34,763 Answers

Probable power supply trouble.

Posted on Nov 28, 2013

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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freetek
  • 5568 Answers

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

welcomejee
  • 10594 Answers

SOURCE: 32LG3000 LCD TV shows no picture when resuming from standby

Hi,
It seems just channel stored data issue.
Please perform Auto Preset / Auto Channel / Auto Tuning (mentioned menu items) and store all channels again.
Hope problem will resolve.

Posted on Dec 18, 2008

  • 21 Answers

SOURCE: lg lcd tv screen goes

I had this problem on my 42" Philips. Just got it yesterday and worked fine on the tv stand. As soon as I mounted the TV to the wall via wall mount system, I had the exact same issue you did. Figured it out today.

The wall mount was putting pressure against the center of the back of the tv (tv set had a slightly rounded back plate, and the mount was a flat plate). As soon as I put spacers (part of the wall mount hardware set) between the wall mount braket and the tv so there was no contact except at the mounting holes, the tv worked fine.

My theory is the pressure pushed the tv back plate against some board components which caused them to overheat (no air flow); or put pressure on internal connectors. I dont know.

Hope this helps, may not apply to your situation.

Posted on Sep 18, 2009

  • 458 Answers

SOURCE: 42" LG Plasma tv, no picture - black screen, but have sound.

Most a likely a problem with your Y-Sustain board which will then not drive the screen giving a black picture. The fuse on the board may be open circuit & need replaced but most likely you will need to have the sustain board replaced.

Posted on Oct 28, 2009

electronick
  • 505 Answers

SOURCE: LG 50PG25 Plasma TV, black screen sound still works.

this faint picture issue is usually caused by a bad z sustain board. it is the smaller scan board on the right side of the tv when viewed from the back. it has some large cables that energize the plasma panel, dont confuse with the y sustain which has the tiny ribbon cables that address each line of the picture.
there should be a # on the board indicating the part number, plug it into a search engine to find parts.

this could also be a low voltage or something else, check the Vs and Va voltages and confirm theyre correct with the ones listed on the sticker inside the tv. Be careful this is dangerous and you can get shocked if you not familliar. The heatsinks can be energized and shock you , exercise caution. if you order a z sus board, make sure you can return if it doesn't fix. I'd say 95% chance its a z sus

Posted on May 21, 2010

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1 Answer

I have a 50inch LG TV that when switching between programmes the TV goes blank for a moment


Are you using cable and if so which company and box?

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My LG 47LE5400 LED powers on with a black screen and no volume!! What could this be?


How long have u had the TV?
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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


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Follow these steps to resolve your problem:

1. Turn off the PS3 so it only shows a red light. You can hold the power button on the front until it goes into standby. To be sure, flick the power switch on the back of the Play Station 3 off and then back on.

2. Make sure your Play Station 3 is connected to your regular TV (not HDTV) with the standard video cables.

3. Press and hold the power button until the screen "flickers" and then immediately release. This should reset the video settings.

4. Wait a few seconds, and the Play Station 3 (PS3) logo should appear.

If this does not resolve the problem, follow these steps:

1. Turn off the PS3 so it only shows a red light. You can hold the power button on the front until it goes into standby. To be sure, flick the power switch on the back of the Play Station 3 off and then back on.

2. Make sure your Play Station 3 is connected to your regular TV (not HDTV) with the standard video cables.

3. Press and hold the power button on the front until the Play Station 3 beeps and then turns off again. This should reset the video for you and you can turn it back on after this.

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