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mcmoonter |
Posted: December 01, 2007 08:09 pm
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Advanced Member Group: Members Posts: 105 Member No.: 600 Joined: January 18, 2007 |
Recently our TV lost ITV3. We've tried retuning as per the instruction manual and its still a no show. I'm too mean to subscribe to Sky so we only receive Freeview(Cooncil in Scotland) Channels. We live about a couple of miles from the transmitter with an almost clear view of it.
However on Speyside , my partner has next to no signal and can receive a selection of stations we cant. Do I need to do a Rod Hull, ditch the emu and get up the ladder and twiddle the ariel? Or just suffer the emu complaining that he cant see I'm a Celebrity Get me out of Here? MC |
steelcityuk |
Posted: December 01, 2007 08:45 pm
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Double Chevron Group: Members Posts: 689 Member No.: 388 Joined: June 21, 2006 |
Does your partners aerial point to the same transmitter as yours? It used to be the case that not all transmitters (and relay stations) broadcast all the channels. Another possibility is that the signal is too strong for your tuner, in which case an attenuator could cure it. Finally not all aerials are suitable for digital, generally wideband type get fitted these days which are good for digital but the older narrowband type aren't so good.
Steve. -------------------- XM 2.1 SED - RP5876
Prius T Spirit - MB A170 CDi XM S2 2.0 TCT LPG Exclusive Hatch RP6654 C5 HDi110 Exclusive XM S2 2.5 VSX Estate XM S2 2.1 VSX Hatch Xantia HDi Exclusive 405 GTX TD |
robertxmb |
Posted: December 01, 2007 08:50 pm
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Super Member Group: Members Posts: 255 Member No.: 184 Joined: June 14, 2005 |
Hi Mc,
Try turning the STB or TV off at the mains to reset the software. If you are stuck try the freeview section of the forum Digital Spy (google for it).Lots of helpful gurus there if you don't find an answer to your problem here. Robert. |
Peter.N. |
Posted: December 01, 2007 10:33 pm
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Andre's Mate Group: Members Posts: 3414 Member No.: 78 Joined: August 31, 2004 |
If retuning and rebooting don't work, assuming ITV3 is still being transmitted, your problem will be weak signal. The fact that you can see the mast doesn't really mean a lot. Digi is transmitted from an array of aerials spaced round the mast and at relativly low power, until analogue is switched off the the power will be increased. The radiation pattern is like the petals of a flower and if you happen to be facing a gap rather than a petal, you will recieve a poor signal. You can try moving the aerial or fitting a higher gain one.
Another possible cause is poor quality cable. If the flylead (goes from to TV to the aerial socket) is of poor quality a substantial ammount of signal can be lost. Either get a better quality one (thicker) or better still get a couple of coax plugs and a length of proper aerial cable and make your own. Peter.N. -------------------- Used to have:
'96 'N' 2.1 td VSX manual estate White RP6695. '01 'Y' 406 GXL Hdi 110 manual estate silver '01 C5 estate 2.0. Hdi 110hp manual Located in Charmouth, Dorset. U.K. Blower transistors MJ 11015 |
robertxmb |
Posted: December 01, 2007 11:44 pm
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Super Member Group: Members Posts: 255 Member No.: 184 Joined: June 14, 2005 |
Since ITV was ok then lost indicates a software / tuning problem rather than the aerial unless that has changed in some way eg water entering cable. You could try manual tuning frequency if you know it.However, you seem to lack the full complement of channels, which if available from your transmitter, could indicate a poor signal from aerial. I agree with Peter on the importance of a good aerial installation and worth doing in any event. You can get ones optimised for digital signals and use the co-ax cable that has copper foil screening (satellite type) rather than braid screening. The digital signal is more liable to electrical interference -pixellation of picture and screeching on sound. Unlike analogue you either get a picture or you don't, no half measures.
Robert. |
Norman |
Posted: December 02, 2007 10:56 am
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Advanced Member Group: Members Posts: 141 Member No.: 377 Joined: May 24, 2006 |
I would try for the search for new channels option. they have recently changed the majority of the channels about most digital tv's outo tune not so the set-top boxes so a re-scan should refind the channels
-------------------- Ex 98 Xm Vsx 2.1 Td Silver Estate RP 7548
without a sunroof Located in Edgerton, Huddersfield HD3 3LX Now with a C6 2.2 in Black still without a sunroof |
mcmoonter |
Posted: December 02, 2007 02:49 pm
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Advanced Member Group: Members Posts: 105 Member No.: 600 Joined: January 18, 2007 |
We have a wideband ariel fitted. Its only 5 years old and the cable we used was the foil type. I tried switching off at the main and auto retuning. All channels worked except ITV3.
It would bother me more if there was something worthwhile to watch on it. I should see it as a sign to get out into the cold and fix the reversing lights on the Mothership. MC |
Peter.N. |
Posted: December 02, 2007 03:49 pm
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Andre's Mate Group: Members Posts: 3414 Member No.: 78 Joined: August 31, 2004 |
Digi is strange stuff, the signal has to be strong enough for it to work at all. A weak analogue signal will just give a grainy picture but digi has a cutoff threshold below which it wont work. Channels are grouped in 'multiplexes' equivelent to one of the old analogue channels, if the signal is weak on one particular group you would think that you wouldn't recieve any of the channels - not so, you can loose just one.
I dont really understand digi and as I am retired now I am pleased I don't have to. I grew up with valves and they are really the things I still understand best! Peter.N. -------------------- Used to have:
'96 'N' 2.1 td VSX manual estate White RP6695. '01 'Y' 406 GXL Hdi 110 manual estate silver '01 C5 estate 2.0. Hdi 110hp manual Located in Charmouth, Dorset. U.K. Blower transistors MJ 11015 |