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My ITV/C4 Freeview channels have disappeared - what can I do? Is it my SCART ca

My ITV/C4 Freeview channels have disappeared - what can I do? Is it my SCART cable?

My ITV/C4 Freeview channels have disappeared - what can I do?
Published on by on UK Free TV

It is a feature of television signals that they can be effected by the weather. Aside from the obvious damaged that can be caused by wind or torrential rain, the onset of summer can cause a more intriguing problem called "inversion".

Basically, when the sun heats up the land, the hot air can get trapped below cold air at high level. This creates an "inversion layer" which acts like a polished mirror to TV signals. This causes two problems: you can receive both the original and a reflected signal from your own transmitter (on analogue TV this appears as "ghosting") or interference from TV transmitters that are normally too far distant.

The ITV/C4 multiplex of channels (ITV-1, ITV-2, ITV-3, ITV-4, CITV, C4, More4, E4, Quizcall) use a transmission "mode" called 64QAM, and it is sadly much more prone to these problems.

So, whilst a loft-mounted aerial will provide reception at some time, it will fail at others. The only real solution is to mount the aerial (or a new Class I aerial) outside on a pole, but some people report that changing the cable from the aerial to the set-top box to the high-grade satellite cable can also help.

The SCART connection, by the way, only carries a single TV picture, not the Freeview transmission multiplexes, so if this is disconnected it will result in degradation to every channel at once.







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G
Grace
Friday 17 October 2014 7:50PM

My TV has been coming up with no signal notice please can anyone advise what I need to do to get signal as I have tried all the necessary .....

M
MikeB
Friday 17 October 2014 8:41PM

Grace: Your signal is so low in power its not registering or is gone completely - usually your aerial system has a problem, which is what its telling you. Read the manual for the TV, and it will tell you this. Check back from the back of the TV (to make sure the lead hasn't fallen out). If it looks OK, your probably going to have to call a professional.

J
jason
Sunday 19 October 2014 10:14AM

I've had no problems until this weekend I'm getting interference on itv and channel4 i live in olton solihull b92 7rq does anybody know why this would be happening cheers jas

M
Marianna
Sunday 19 October 2014 5:01PM

Hi

I live in g58pn. My tv freeviw had no signal. I moved the scart plug and now I have bbc one and two etc but missing itv, channel four film four etc. Can you advise ?

J
jb38
Sunday 19 October 2014 6:34PM

Marianna : If moving the scart plug resulted in you receiving BBC1, then all this is liable to have done is to restore the link between the box and your TV, or if "not" using a separate box? indicate that the aerial connection on the rear of the TV requires checking, pull it out then in again a few times as this action cleans the connection.

If though you "are" using a box, then the scart lead is not connected in any way with reception, therefore irrespective of whether using a TV or a box carry out a "first time installation", this also known as "default setting" or "reset", followed in the latter two cases by carrying out a normal auto-tune.

By the way, are you connected into a communal aerial system, if you are? and still cannot receive anything other than the BBC channels after having carried out the aforementioned, check with one of your neighbours to ascertain if they are also experiencing a similar problem.

jb38's 6,029 posts
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Marianna
Sunday 19 October 2014 7:36PM Glasgow

Thanks. It is a communal ariel but not wanting to chap neighbours door just yet. I did all those checks and still not got this channels. Thinking it's maybe the weather with main ariel ? When watching bbc2 tho it does occasionally jump and say no signal and come right back on again !

J
jb38
Sunday 19 October 2014 11:50PM

Marianna: I fully appreciate your reluctance as far as making an enquiry with a neighbour is concerned, as many residents in an apartment block quite understandably like to retain their privacy, likewise do not particularly wish to have contact with anyone residing in close proximity to them, and indeed in many cases for very good reason!

Its just that when anyone linked into a communal aerial system is experiencing reception problems they are somewhat limited in what they can do by not having any control over the aerial system, that is with the exception of checking the jumper lead from the wall socket into their TV or box.

If though the jumper lead appears to be OK, then its likely that other residents in the block are also liable to be suffering from the same problem as yourself by being linked into the same system, not knowing whether they are or not being the only reason for enquiring elsewhere.

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Most popular LIVE 18:55
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Briantist: http://t.co/DBWZNukll4 Arιel Fran Unsworth to lead World Service She will also continue to be deputy director of news a
Briantist: Dearest, beloved @guardian why have you made the #android app keep reseting the comments to the top. So very hard to read on a treadmill.
Briantist: http://t.co/Hss6Q28JYo Artιcle The postponement concluded temporarily at least a long period of impassioned debate from
Briantist: http://t.co/uViGCia4vI BBС DAB Phase 4 Help Receiving TV and Radio This phase of national DAB expansion is expected to
Briantist: Read this! You know you want to... is out! http://t.co/I2KcrfovOv
Briantist: http://t.co/J9WSiAA60v Оne of the reasons that Freeview does not reshuffle the channel numbers is because there is a lot
UDontNeedCable: You Don't Need Cable! is out! http://t.co/qTs5kgOWQl Stories via @freebargain @GeorgeBakhos @Briantist
Briantist: http://t.co/L7FV5IdzxA Nοw that I have finished updating the code that runs UK FREE TV I now have time to write some arti
Briantist: http://t.co/TBE1HWb0pV Newsrooms mυst reflect modern Britain Comment Broadcast The Open Newsrooms Day scheme is a step
Briantist: http://t.co/2Dng29VOCt Why Сameron can t be allowed to scupper televised election debates Media The Guardian The broadc

Click here to follow Briantist on Twitter