All that I can suggest is to check the aerial signals. There are four aerials for TV.
I must admit that I do have mixed reception whilst travelling, varies from brilliant down to breaking up. Outside ours no signal at all but there is a large mill at the back in direct line of the transmitter, 20 yards away the signal comes in and at 100 yards a really good reception.
Main thing is that I can watch the news whilst management is shopping in the local ASDA
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Ray at Wigan Pier
2014 A8L D4 4.0TFSI Gold (Sticker says "Beige") Can't leave you in a black smoke cloud anymore..
In progress, Nothing left to do.
Gone 2004 A8 D3 3.0 TDI. Ebony Pearl Black (with little bits of other colours and glitter)