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LG 42LC2D stopped receiving local channels from antenna

Was working just fine but now wont pick any of the local channels after I performed auto scan

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  • LG Master
  • 74,251 Answers

Check and replace its tuner. If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/

Posted on May 19, 2017

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Posted on Jan 02, 2017

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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

  • 362 Answers

SOURCE: Toshiba 26AV502U Won't Pick Up Channels

Hi albertogiler, I am happy to help, you will need to attach a antenna to the tv to pick up OTA over the air signals, depending on your location you may be able to use a set of rabbit ears, I have provided a link to a site that will explain in depth. http://www.antennaweb.org/aw/welcome.aspx
Let me know if this helps and please rate this solution. lone99star

Posted on Jan 13, 2009

MNfisherman
  • 11896 Answers

SOURCE: Auto Scan doesn't pick up any channels.

In the main settings, there should be an option for AIR or CATV, air is for non-cable and CATV is for cable tv. This has to be on the correct setting before you autoscan

Posted on Jun 22, 2009

  • 6 Answers

SOURCE: Unable to pick up local

first of all, make sure all your connections are secure and threaded all the way in. Next, go to the main menu and press 5 (configuration) and press 1 (search for channels) if this doesn't work, press 4(signal strength meter) and see how strong your signal is. You may just need to re-position your antennae. If all else fails try system reset(number 5) and repeat search for channels. I've had similiar experiences with mine but I have a 62% signal strength and still get 20-something channels. Hope this helps.

Posted on Oct 11, 2009

  • 210 Answers

SOURCE: after auto scan, channels are not being displayed

Yes try factory reset if still not working make sure in the country

Posted on Oct 26, 2009

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You'll then have to switch the tv source mode to video 1.
Hope this of some help,
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