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Integrated tv tuner does not find bbc channels

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  • milly206 Apr 26, 2008

    Hi,
    My TV is not a projection tv.
    When I auto tune,sometimes the missing channels will be found & saved, but later they will have disappeared, and no signal is broadcast onto the screen. All other channels are unaffected.

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TV tuners made for US haves NTSC scanning format, BBC (UK) uses PAL/SECAM. You can purchase converter at: world-imports.com

Posted on Apr 26, 2008

  • Van Lake Apr 27, 2008

    I assume you have cable or sattelite feed. Some channels may have programmed into tuner memory but are too weak to lock.

    Problem may be in cable connections

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My humax won't;t record bbc channels. I have tried retuning the tv.


This could be too much signal thanks to the Freeview retunes going on. Your aerial is more sensitive at some frequencies, so there's more signal power higher up the frequency range. The signals for BBC and ITV are among the strongest ones broadcast. If they are now at a point on the aerial's range where they are too strong for the TV then the tuner will over-saturate. The result is the same as no signal.


Have a look online for a Variable Signal Attenuator. It's a device that can be added to a aerial signal cable just before it goes in to the tuner. The adjuster allows the signal level to be reduced. Watch the TV's signal quality and signal level displays if it has them. As signal level (power) reduces you'll actually see signal quality increase. If you go too far then quality will start to go down again. The optimum point is where quality is highest.

Oct 08, 2014 | Humax Televison & Video

1 Answer

How to tune a tv


Try the TV in a location where one of the other TVs works. That will show if it's a TV or a cabling issue.

It's entirely possible you have too much power in the aerial signal system. The mux carrying the BBC channels will be one of the strongest at each TV transmitter across the UK. This is because something like 96% of the UK mainland population must be able to receive at least the BBC and main commercial channels to fulfill the broadcasting requirements. Your old TV might not have been so sensitive. The new TV might be more sensitive. So the signal is overwhelming the digital tuner.

Try a variable attenuator. This will give you a power control to reduce the signal as it comes in the back of the new TV without upsetting the other TVs. The MA1620 on this page is perfect for this. http://www.satcure.co.uk/accs/page15a.htm
Splitters amplified splitters and attenuators

Sep 06, 2014 | Televison & Video

1 Answer

How to tune a tv channel


This could be too much signal.

Just to be sure though, try the set in another room where one of the other TVs works okay. This will help you see if it's a cable or a TV signal issue. If you pick up all the channels okay it's likely that that other TV point has some bigger signal losses due to the cabling.

The mux (transmitter channel) carrying the BBC signals will be amongst the strongest at each and every TV transmitter across the land. This is because the BBC and the main ITV channels have to reach about 96% of the mainland UK population in order to the broadcasters to fulfill their remit.

TV tuner sensitivity varies between brands and models. It may be that your old TV was just about okay with the signal power, but the new TV's tuner is over saturated.

A simple and inexpensive diagnosis tool is a variable attenuator. The MA1620 on this page is perfect for that job:
Splitters amplified splitters and attenuators

It will give you a way to reduce the signal level at one TV without affecting the other TVs in the house.

Sep 06, 2014 | Televison & Video

1 Answer

I have an LCD HDTV BLA. I have Freeview and


Hi.

If you are using an external freeview box you need an HD box (See available products).

If you have an LCD TV with built-in HD tuner (TV will say HD Ready and will have internal tuner), then you can use the TV internal tuner.

The best way to get HD is via satellite. Althought HD Freeview is theoretically available since end 2009 I have not been able to receive any HD channel using Freeview tuner, and I live in a London area where HD FV is supposed to be available since 2010.
Even with Free Sat the choice is poor. You get steadily only BBC HD, where at most you can watch some documentary or drama series (it is a kind of sample channel). ITV HD, BBC1 HD and the rest frequencies on Astra change Sat quite often. I am a TV technician and the sat tuning job is not difficult to me but retuning every month was still an awful waste of time.At the end I gave up and I only watch HD through Sky.

At the end of the day the only efficient way to receive HD TV is still through Virgin or Sky.

Regards.

Ginko

Sep 01, 2011 | Samsung Televison & Video

1 Answer

Loss of BBC channels


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/

Oct 01, 2009 | Philips TV Tuner Video Capture PCI Card -...

1 Answer

Digital Channels??


Direct from the Hitachi website - "Integrated HDTV Tuners: Hitachi's new top-of-the-line XWX series features built-in ATSC terrestrial and cable HDTV tuners to provide integrated high resolution, high-definition signal decoding." You will need a seperate HDTV tuner if you do not have cable or satellite and want to watch off-air High Definition channels.

Apr 30, 2009 | Hitachi 57SWX20B 57" Rear Projection...

1 Answer

NO DTV CHANNELS


There may be an input button on the remote, or on the TV, that allows you to switch from the standard ATSC tuner to the DTV tuner.

Let me know if you can't find it and I will dig for an owner manual. But the above should allow you to switch tuners and input sources.

Feb 16, 2009 | Samsung LE32R74BDX 32 in. HD-Ready LCD...

2 Answers

No freeview bbc channels


just solved the problem
with the variable attenator fitted i did a rescan still didnt work
but when i did a rescan to the restore factory settings it now works

Nov 24, 2008 | Televison & Video

1 Answer

I have lost the normal tv channels on all 3 of my TV's (bbc 1 bbc 2 itv channel 4 through the aerial) but freeview channel are still working on AV. any ideas?


If you have all 3 tv's in the one house and on the one antenna then it sounds like you have been subject to either a lightning strike or a large static discharge onto your antenna. What this means is that the tuner packs in the back of the tv's has been damaged and will need to be replaced. However as you have said in your question they do work using an av input. This will be your cheapest option to get them working again. Buy cheap vcr's for them and connect via av cables, as the tuner modules are expensive to buy and even more so to have fitted.

Jul 02, 2008 | Televison & Video

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