I have a 55" Q80 and all is well except that it keeps losing signal on my HD Freeview channels like BBC HD. They still appear in the guide and channel list but when I select them I get the No Signal error screen. If I retune it, then it finds all the channels including the HD ones and the signal is perfect. I've checked the self diagnosis and it even says signal strength of 100%. I appreciate this can fluctuate but why does the telly seem to get into a state where it no longer has the channel working. It's very frustrating and happens on average every 2-3 days. Once it happens it won't recover by itself and I have to retune again. The firmware is up to date. Please help?
It seems to happen to all the HD channels I have checked (I have not checked them all). But included are BBC1 HD, ITV HD and Channel 4 HD. I'm based in Surrey, UK.
It's the most up-to-date firmware. I checked.