Question about 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 selected by auto tuning so it is not an antenna problem.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Guru:

    An expert who has written 7 tips or uploaded 3 video tips

  • Master
  • 859 Answers

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

  • Glenn Rogers
    Glenn Rogers Oct 23, 2008

    Below is the reply from a cohort of mine on FixYa.com who also lives in the AU and his take as a professional electronics technician (he, I and many others on FixYa are burdened with gray hair and receding hair lines, we've been doing this for so long.)

    I would take all this information into mind, print these off, and then begin your 'treasure hunt' for the practical solution to your problem. I believe his suggestion to use Digital mode vs. Analogue mode would make the biggest most immediate change.

    Keep us informed if you don't mind, it helps us all to function better on this web site and at times in our businesses as well.

    [Begin Consult]
    If they are looking for analog ABC, it is low band VHF, ch2 to be exact,where the rest are high band VHF, and needs a decent multiband antenna to get it in a lot of areas, well in Brisbane at least. We have Mount Coot-tha that has a good propagation to most metro areas approx 40km radius, although it starts to get a bit noisy on the ABC due to lowband interference issues. .
    There are many areas of AU that use UHF for TV also. Not enough hills in many parts of the east coast to get the coverage, so there can often be UHF translators that you need to tune onto. I suspect the ABC problem does relate to them not using an antenna that is suited to VHF, saying this of course if they get the other channels (7,9, and 10) ok.

    Go here for a more specific channel/frequency guide to determine if it is the problem by location. ABC is on different channels almost depending on what suburb you are in for some areas. If the DVR can do digital, then they should go that way as it is now UHF ch21. It may be that they are trying to get analog signals, that will be turned of in the near future... so tuning the system in for UHF propagated digital is the way to go.

    Back in the day when I used to do antenna I recommended the Hills PF11 antenna, multiband 11 element yagi with low/high band VHF/UHF, or a PF17 (17 element) with mast head amp if they are in a marginalized signal area. But a UHF array is still the best way to go if they can process a digital signal. Hope that helps :)

    oh and the spurious harmonic auto tune may well be the issue, just that ch2 reception has been poor for so many people over the years, will be good to see it finally turned off!!

    [end Consult]


×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Lg 26lh2000 wont auto retune, help please.


There is the digital tuner (DTV) and the analogue tuner (TV). Make sure you are tuning the digital side as there are no longer any analogue TV broadcasts in the UK.

Sep 04, 2014 | LG 26LH2000 26 in. HDTV LED TV

1 Answer

LG DVR lst-5403p won't power up


About the only thing you can hope for is the fuse inside got taken out.

Someone will have to open it and follow the power cord to it to find out.

Jun 11, 2012 | 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

1 Answer

My hard drive has failed in my LG LST-5403P PVR. I put in another (smaller) hard drive, but the unit still says "hdd failure" and won't format it. What can I do to get it to recognize the new...


If LG do as Poineer do, the hard drive has to be added to the system with a special service remote and a code. Maybe a drive of identical size may help?
Good luck.

Jan 08, 2011 | Televison & Video

1 Answer

Digital tuning is failing


The retuning process is as follows:

  1. Press the [i+] or MENU button on the remote control to display the DIGITAL INFO menu.
  2. Press the BLUE button to display the MAIN MENU.
  3. Press the UP or DOWN buttons to highlight AUTO TUNING then press the OK button to display the AUTO TUNING MENU.
  4. Press the RED button to start the auto tuning process for all available digital channels.
  5. Wait for the process to complete.

If you wish to CANCEL the auto tuning process whilst it is processing then press the BLUE button at any time.

You may lose some channels when you retune the TV as the channels have been rearranged. To locate them look at the EPG although you may still find that some channels are no longer available on FREEVIEW. See the following link for additional information

http://www.freeview.co.uk/_retuneinfo/

If the above process does not work then check the link above for additional information and also visit the accompanying site links below to find more information for your model of TV / FREEVIEW box.

For troubleshooting the retune procedure visit http://tvretune.co.uk/troubleshooting/

For specific model information visit http://tvretune.co.uk/productmanuals/

Feb 19, 2009 | Sony BRAVIA KDL-40V4000E 40 in. LCD TV

2 Answers

PURCHASED 52" LG LCD HAD A GREAT PICTURE.ALSO HAVE DIRECTV. TOUCHED THE MENU BOTTON SAW THE AUTO TUNING, THOUGHT THAT WOULD BE A GOOD FEATURE. WENT AHEAD AND LET IT RUN THROUGH ALL THE CHANELS. NOW IT...


Because you have DirecTV there is no need to use auto tuning. You simply changed inputs on the TV when you started auto tuning. Just use the input button on the remote to go back to the Direct TV receiver. Most likely it will be under Component (Color Stream) or HDMI input.

Dec 31, 2008 | LG RU-27LZ50C 27 in. HD-Ready LCD...

2 Answers

Cannot get local channels back after dropping cable.


Are you positive that your city has not done the Digital Conversion? Some Cities are doing it early before the February deadline. Also make sure you are tuning in to the correct channels. Meaning that if on your Cable Provider ABC was on Channel 3 that does not mean that ABC with still be on Channel 3 after you have your Cable turned off. Most of the Time the Local Stations Tag will let you know what channel its on. It will be something like "KWAS ABC 27" So on your TV you would Tune it to channel 27 to get ABC and the same fore NBC , FOX, CBS , etc...
I hope this helps Take Care =)

Dec 07, 2008 | Televison & Video

1 Answer

Would you confer with me on this couple in Australia


If they are looking for analog ABC, it is low band VHF, ch2 to be exact,where the rest are high band VHF, and needs a decent multiband antenna to get it in alot of areas, well in Brisbane at least. We have Mount Coot-tha that has a good propagation to most metro areas approx 40km radius, although it starts to get a bit noisy on the ABC due to lowband interference issues. .
There are many areas of AU that use UHF for TV also. Not enough hills in many parts of the east coast to get the coverage, so there can often be UHF translators that you need to tune onto. I suspect the ABC problem does relate to them not using an antenna that is suited to VHF, saying this of course if they get the other channels (7,9, and 10) ok.

Go here for a more specific channel/frequency guide to determine if it is the problem by location. ABC is on different channels almost depending on what suburb you are in for some areas. If the DVR can do digital, then they should go that way as it is now UHF ch21. It may be that they are trying to get analog signals, that will be turned of in the near future... so tuning the system in for UHF propagated digital is the way to go.

Back in the day when I used to do antenna I recommended the Hills PF11 antenna, multiband 11 element yagi with low/high band VHF/UHF, or a PF17 (17 element) with mast head amp if they are in a marginalised signal area. But a UHF array is still the best way to go if they can process a digital signal. Hope that helps :)

regards
robotek

Oct 23, 2008 | Televison & Video

1 Answer

Direct TV DVR Recording Problem


call tech support & ask them to hit your box to reset it, in the meanwhile unplug it for 15 seconds

Apr 22, 2008 | Directv (R10) DTV Receiver / 70-Hours...

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

1,183 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

72670 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

yadayada
yadayada

Level 3 Expert

70387 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...