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t could be too much signal overloading the YouView box. You could try a 6dB attenuator which you can get from TV shops or online.
Signal overload is quite common if you are near a transmitter, or have an aerial amplifier.
If the signal is too strong, the digital tuners in the YouView box cannot extract the data from the muxes, they are not all the same strength, which is why some channels work, and others do not.
Try a 6dB attenuator in the aerial input to the YouView box.
They are a very simple inline component, with a TV plug and socket, and fit in the lead, where it plugs into the YouView box.
You should aim for a signal level of about 70-90% with a signal quality of 100%.
And Voila !
My Freeview channel list has gone from 65 to 220, so the attenuator has done the trick!
Thanks for your assistance!
Its something that is often overlooked.
Used the same information today.
no Freeview before fitting the 6db atten.
after fitting all ok.
this is in my mother in laws flat with a boosted aerial to all sockets.
It looks like I might have the same problem. I set up my new BT Youview+ box last night, and I onlu got 32 Freeview channels. I'm replacing a previous Youview box, which worked just fine with gazillions of channels. The channels that I do get have 90% signal strength.
Is it a known problem that the BT Youview+ box is more sensitive to signal overstrength than other (older) boxes ?
Before I dash off to Maplin for an attenuator, are there any other possibilities ?