Question about LG 42LC2D 42 in. LCD HDTV

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TV will be working fine, then all of a sudden, no picture and 'no signal' sign comes up. This can last anywhere from a few minutes to all day. Sometimes cable signal comes back, but still can't get digital or analogue signals.
Have had digital antenna installed. all other analogue tvs work as does cable in other room. Also, when this happens, if i try to watch recorded tv, i get a picture, but there is no sound.

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  • Anonymous Dec 13, 2007

    TV will be working fine, then all of a sudden, no picture and 'no
    signal' sign comes up. This can last anywhere from a few minutes to all
    day. Sometimes cable signal comes back, but still can't get digital or
    analogue signals.
    Also have digital satellite antenna installed. all other analogue tvs work fine as does
    cable in other room.

  • Anonymous Dec 13, 2007

    LG 32LC56 will be working fine with my Sky HD, then all of a sudden, no picture and 'no signal' sign comes up. This can last anywhere from a few minutes to all day. If i reselect the HDMI1 on the TV the picture comes back.

  • Bluejed Dec 23, 2007

    LG 42" LCD with HD looses signal, if unit turned of then back on a few min later, god for 5 - 10min then same problem. Cheched signal through menu on TV Good whilst working then bad when signal lost

  • Anonymous Jan 15, 2008

    I am having this same problem with my 26 in. LG. I need to know if it's the tv or is a cable box problem. Comcast has offered to replace the digital cable box, but if it's the tv I need to return it.

  • aamee Feb 07, 2008

    I was watching nine all of sudden my remote didn't change channel and when it finally did, all Chanel's were gone , Digital channels come up as NO SIGNAL and analog is working fine tried to re-tune may times didn't fix the problem , it is strange that i can watch TV on analogue signal but not digital ?? If anyone can help would appreciate

  • Chrizzo Feb 25, 2008

    just goes black. Cant change input modes, then when its obvious its "crashed" you cant turn it off unless you hold the control off button for seconds..

    Turn off and let sit, turn it back on and it used to come back for 30 secs then its toast. Now nothing comes on...

  • Anonymous Mar 18, 2008

    My LG 42" HDTV just started doing the same thing. No Signal, Analogue TV video o.k but no sound and when you play a pre-recorded show, no sound also.

  • Anonymous Nov 20, 2008

    when attempting to watch a d.v.d. the screen says NO SIGNAL, however, i can hear the movie playing.

  • Anonymous Nov 27, 2008

    When ever I go to any channel that is not a cable channel it comes unclear. Then it say's No Signal Channel not availible. What's wrong help I'm dying to watch HDTV. My unHDTV has better signal.

  • Anonymous Nov 27, 2008

    My cables working fine. But other channels are like No Signal Channel Not Available.Help me I want to watch HDTV real bad. My unHDTV has better signal.

  • treimer Nov 28, 2008

    I have a new LG 52 inch LCD. Perfect under TV signal, but with Blu-ray, it occasionally (4-5 times per movie) decides there is no signal, shuts down, realizes there is a signal, turns back on. Lose about 30-45 seconds of the movie and must back up. it is definitely an issue where the TV thinks there is no signal. On the flip side, you can start a Blu-ray without even turning the TV on. Once it senses the signal, it turns itself on. Cool, but it will go back to the store if it cannot be fixed.

  • bubbe19 Jan 26, 2009

    My LG HDTV 47" is new. Working fine yesterday. Today when we turned it on today, it said DVI Alert: HDMI is blocked. It had another warning, but it went off the screen and now it only says "no signal". The DVD works and the TV remote works. We tried all the other HDMI's 1-4 but they all say no signal. The cable company says the HDMI wire burned out. But it is only 3 weeks old. and a monster cable. What can we do?

  • Anonymous Mar 07, 2009

    No screen. Cable is working fine on all other tv's in the house. The power goes on and off all on it's own.

  • wlcm2thdwn Apr 12, 2009

    My NEW TV was working fine, it's only been up for a wek the on Easter sunday the picture went blank except for a 'no signal' prompt. I had my old antennae on it do i need to go buy the new DTV antennae?

  • Anonymous May 02, 2009

    TV and PS3 working fne other than that nothing else work, Not even Direct Tv

  • shane guyton Nov 23, 2012

    my digital antenna does not work, for awhile I had to move it around a little to get a signa.Then I rescaned using a high dollar antenna, it was the same till I kept trying and now nothing at all.

  • Anonymous Mar 17, 2014

    Grundig tv digital program no sound but analogue there is sound picture ok



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To fix the problem, try turning off the TV and unplugging it from the outlet. Once unplugged, push the power button and hold it down for 1 minute. Then turn the TV back on and rescan for channels.

If the problem persists, contact LG customer service immediately as there is a problem with the memory card. The device is unable to retain scanned channels for immediate feedback.

All LG LCD automatically comes with a 1 year manufacturing warranty. You would have to provide proof of purchase to show when it was purchased. Hope this helps. The Guru

LG customer service:

Posted on May 12, 2010

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I have a 26" LG and this happens to me any time I unhook a cable from the back of the TV, HDMI or not!


Make sure your TV has no Power and unhook every single cable from the back of your TV. (press the power button the make sure)

I left my Coax cable hooked up and I did not lose any channel information when the power was off but I did this pretty quick!

Once everything is unhooked from the back of your TV, reattach everything! (I know it sounds stupid but it works for me.)

Once you have attached all the cords again, turn the TV back on and you should have your HDMI again!

I don't know why this happens but I lose my HDMI on both Connections just by removing my Coaxial Cable Connection! TV/Comptuer/VCR all come in fine with Coax/RGB/RCA connections but I lose both HDMI untill I do the process listed above.

I should note that I have had this issue with other TV manufacturers as well, it seems to be an issue with HDMI itself.


Posted on May 27, 2010

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I. Turn the TV back on and rescan for channels on input from Comcast Cable using RCA component cables i.e. red, yellow, blue, green, and white
A. Choose 'Components' as imput source
1. Choose 'No' to scan from existing channels
2. Choice of 'Antenna' or 'Cable' shows 'Antenna' but default and will not move to option Cable image
3. Scanning begins with '0' channels stored
4. Batteries in Remote Control seem charged
II. I have Alternate HDMI 1 and 2 Ports open in Monster Wire
A. I note there is a antenna and cable button on the bottom left corner of the back of the television and am controls the remote?
III. The Amplifier is on auxillay and I can hear television channels coming directly from the Comcast Cable Box by changinging the comcast cable Remote Control. All televions in the ouse have a picture.

Conclusion LG 'No Signal" is a problem with the television.


Posted on Jul 27, 2010

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If it still under warranty get intouch with LG-if not looks like (if its definitely not your input signal) theres a problem on the mainboard- if theres a firmware fix for the issue youll have to look into as there are many forums with ppl who have problems like this

Posted on Dec 18, 2007

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Factory reset the tv and located the router box

Posted on Sep 03, 2015

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