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Since digital switchover yesturday loss of digital channels

Since digital switchover yesturday my tv after retune cannot pick up bbc1,bbc2,bbc3,cbbc or bbcnews24. Rescanned DVD recorder with no problems so not ariel problem. How can I get TV to scan a larger range ?

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  • Anonymous Mar 26, 2014

    TV dosn't pick up channel 9 and no other TV in house can get channel 9 when new LG TV is connected to the ariel system. If TV dose not have an earth it dose not effect the other TV

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  • Master
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It may well be your aerial despite the success with your DVD recorder.

Digital signals are very much weaker than analogue ones, and when multiple devices share a single aerial you can get this kind of problem. You also lose about 60% of the signal at each point in your aerial cable where there are signal splitters.

There are a number of possible solutions:-

First, look at every bit of coaxial cable you have between the aerial and each appliance. Check especially at the aerial end for corrosion or poor shielding/installation and especially for evidence of rain water penetration. If the aerial is on the roof then it will cost almost as much to get the aerial inspected as it will to have it replaced, so skip to the next option. But otherwise, check along every bit of the cable for any cuts or splits in the insulation and properly remake every junction or joint if there are any doubts about them. If the cable is in poor condition then consider option three instead.

The second is to try to see if you get a better digital signal from another transmitter, this will involve trying different aerial positions so is impractical if your aerial is roof mounted but is worth trying if it's in the loft instead. It doesn't always follow that your best digital signal will be from the transmitter which you used for analogue transmissions.

Thirdly, if you're still using the same aerial as you have done for years then it's worth upgrading to one optimised for digital reception. When doing this it's foolish not to replace the cabling as well as you need it to be as good as possible. With analogue, many installers got away with using cheaper cable intended only for very short cable runs from the wall socket to the tv.

The fourth option is the budget option but can work as well as the third option: fit an additional analogue style aerials and run a separate cable down to each appliance. If these are fitted in the loft and you have the space, then there's no aesthetic or planning concerns. Normally the extra cables can run partway down through the house alongside existing cables, but for best signal quality keep them separate and ensure that the cable runs as as short as possible.

One further thing which you may want to try before all else: connect your digital box directly to the aerial cable which currently feeds your dvd recorder. Leave all other tv devices disconnected from the aerial. If the box retunes correctly then it's definitely a supply of signal issue as outlined above and if not then you should add the exact make and model of your digibox as a comment to this answer as there are a large number of earlier digibox models which cannot retune correctly due to evolving standards.

Posted on Jul 02, 2009

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Sony United Kingdom Limited
Customer Information Centre (CSG)
Jays Close
Basingstoke
RG22 4SB
I have

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