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Lg tv 42ld650 no signal - when auto tune finding some channels, but then they don't work

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Toshiba D-VR650KU can't "see" digital channels

On the Notification screen with Cable highlighted I found that left clicking on Cable gave a drop down menu with TV on it for selection. The manual says that while Cable is highlighted, use the up or down arrows to get TV to be an option and then select it and Yes and enter. Hope this helps. I have other problems with my monitor on Line Out, the screen oftens turns blue indicating low or no video using Line 1 or 2 inputs.

Posted on Mar 09, 2008

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ginko
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SOURCE: Toshiba rd-xv47kb auto tune

Check that you have the arial plugged in correct input otherwise it will not tune up.

Posted on May 11, 2008

  • 1 Answer

SOURCE: I have a DVB-T VCR/DVD

Spent much time in the loft adjusting the aerial. Everything now OK

Posted on Jun 29, 2008

worldvet
  • 859 Answers

SOURCE: When auto tuning my LG

Hello,

The ABC channels arrive on a different Harmonic than Analog signals; specifically the third Harmonic. When you auto tuned, the auto tune chip looks for stron analog channels on the first harmonic and any other strong signals. However the LG model is notably poor at capturing 3rd Harmonic signals.

Harmonics are different frequencies where the same signal can be captured. Making this overly simplified: a frequency multiplied by 2 is a harmonic and that multiplied by 2 is also of the same harmonic; inversely dividing by 2 and 2 gain and so on finds harmonics down in light wave frequencies.

You may be able to manually tune these ABC frequency channels manually (I do not know, as I live in the US and have no direct experience with this) and then add them in one by one. But, using the Auto Tune feature again will wipe those out. The same thing happens to other weak signals, which harmonic is actually (its on an offset carrier wave).

I just read of a man who built an improved antenna and put this in his attic and received ABC channels quit well. A decent understanding of Antenna physics is required, but it only took up 1.5m wide by .8m (sic) long. In a nutshell he improved his basic antenna by building his own more sophisticated antenna.

Shopping around and asking in the shops should get you an antenna add on that will work for you.

As I stated before I live in the US, and we don't have this, but I and others here at fixya have various experience in amateur radio.

I will ask a friend of mine who lives in Australia to confer with me on this problem of yours so he can add some value to our response to you.

Regards,
Worldvet

Posted on Oct 23, 2008

  • 273 Answers

SOURCE: unable to tune in my LG Electronics TV (model 37LC2d-ec) to receive digital channels. Bought in UK, now living in Australia.

use a scart lead connected between your digital receiver to your tv

Posted on Jun 03, 2009

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I have an lg tv model 37LC2DB - EC I lost all my channels and can not auto programme so I did a factory reset now it says not programmed how do I get my digital TVs channels back


Re-program.

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Jan 20, 2016 | LG Televison & Video

1 Answer

I m having a problem with lg led le5300 26'' it is not catching any signal it has stopped playing any channel i have tried auto tuning so many times but no channel found.


Make sure your cable/antennae connection is OK and you're getting signal from over there by connecting another (working) tv set to it.

Mar 28, 2015 | LG 26LE5300 26 in. LCD HDTV

1 Answer

How do I reconfigure an LG 32LY560H from Commercial setup to auto tune for use in personal residence?


possible that you need to have cable to do this, you might only have 6 digital channels, without cable

Mar 01, 2015 | LG Televison & Video

1 Answer

I lost a few digital channels on an old LG LCD, tried to auto tune but could not retrieve. Followed a tip online that said to auto tune with the antenna cable which will wipe all saved channels, once...


hi your signal could be to strong, on the aerial cable the thin brad rap 4 strands around the center solid pin then retune in auto, if this does not work you may to manual tune it in, or get someone to check your aerial and you could try a firmware update on your tv hope it helps

regards
shaun

Jun 29, 2014 | Televison & Video

1 Answer

New LG 32LD350 - Allowed TV to auto-program channels, and for some reason, it skipped past channel 4 during the tuning process. When I select channel 4 in the tuning options, it comes up as no signal. On...


When you are auto tuning the system will not store a channel which is week by its standard ( at least 60% signal strength ) This done to avoid grainy picture and hissy sound.
You can go into manual tuning and store it.

Mar 11, 2011 | LG 32LD350 32 in. LCD TV

2 Answers

Hello .i have a lg tv which i purchased in 2008 and only watched videos,i now want to watch tv i have tried auto tune and it only finds 3 vhf channels and none digital.it has preview built in but i can not...


if it has freeview built in its usually programmes itself try turning it on and go into the menu and there should be an auto tune function hit that and it should tune up but remember it needs to be connected to an aerial if it still says no signal try moving the aerial, getting a booster for the aerial they usually plug into the mains then into the back of your tv and you plug your aerial into that to boost the frequencey if that doesn't work then you might need to think about getting a new aerial but you can get 1 for under £30

Feb 02, 2011 | LG Televison & Video

1 Answer

I got an American model of LG. i can not tune it by auto nor manual can you please help


You can get a manual here: http://www.lg.com/us/tv-audio-video/televisions/LG-lcd-tv-32LG30.jsp . Click on the Support and then on the right hand side look for User's Manuals. Since the TV has a tuner for ATSC, NTSC, and Clear-QAM, the next question is what is your signal source? (analog, digital and unscrambled cable)

If you are using OTA, make sure that the input is set to Antenna. Use antennaweb.org or tvfool.com to check the direction to point your antenna and the appropriate antenna for your distance to the transmitter. antennaweb assumes an external antenna and is very conservative in the list of channels you should be able to receive. tvfool gives the stations available with different antennas. If you have several tvs connected to one source, you may need an amplifier in addition to the splitter. This also can help marginal signals come in since digital is either enough for the tuner to resolve or no signal. (Check splitters and amplifiers if you suddenly can't get a signal that you used to receive. Also check if the antenna has been turned.)

Menu > Channel > Auto Tuning or Manual Tuning. If Lock System is active, you will need the password. Auto Tuning only searches for digital or cable channels. The manual tuning option should provide the signal strength as well for digital stations (as well as letting you search for analog signals or all signals (digital, analog, cable).

Use the input Cable for coax cable connections. Other inputs will not allow you to search for channels since they are meant to be controlled by the set-top box feeding the system.

I hope this helps.

Cindy Wells

Nov 05, 2010 | LG 32LG30 32 in. LCD HDTV

1 Answer

I CANNOT TUNE IN MY LG FREEVIEW TV IN WHEN I AUTO TUNE IT IT CANNOT FIND ANY CHANNELS HAD NO PROBLEM BEFORE THE 4TH NOV


Sounds like the digital tuner modual has failed. Check all connections into the TV and make sure secure. Check with another Tv at that location & make sure you have signal. If all checks out with signal & runnning auto program, then you have a faulty tuner.

Nov 07, 2009 | Televison & Video

1 Answer

When auto tuning my LG LST-5403P dvr I can not get the ABC channels. It worked correctly until my wife decided to go thru the auto tuning process!!! The missing channels can be picked up at the TV but not...


Hello,

The ABC channels arrive on a different Harmonic than Analog signals; specifically the third Harmonic. When you auto tuned, the auto tune chip looks for stron analog channels on the first harmonic and any other strong signals. However the LG model is notably poor at capturing 3rd Harmonic signals.

Harmonics are different frequencies where the same signal can be captured. Making this overly simplified: a frequency multiplied by 2 is a harmonic and that multiplied by 2 is also of the same harmonic; inversely dividing by 2 and 2 gain and so on finds harmonics down in light wave frequencies.

You may be able to manually tune these ABC frequency channels manually (I do not know, as I live in the US and have no direct experience with this) and then add them in one by one. But, using the Auto Tune feature again will wipe those out. The same thing happens to other weak signals, which harmonic is actually (its on an offset carrier wave).

I just read of a man who built an improved antenna and put this in his attic and received ABC channels quit well. A decent understanding of Antenna physics is required, but it only took up 1.5m wide by .8m (sic) long. In a nutshell he improved his basic antenna by building his own more sophisticated antenna.

Shopping around and asking in the shops should get you an antenna add on that will work for you.

As I stated before I live in the US, and we don't have this, but I and others here at fixya have various experience in amateur radio.

I will ask a friend of mine who lives in Australia to confer with me on this problem of yours so he can add some value to our response to you.

Regards,
Worldvet

Oct 23, 2008 | Televison & Video

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