Just recently over the last couple of weeks, I kept getting a blank screen when watching ITV programmes with a message saying 'channel not found’. It’s a 40” Panasonic smart TV about 5 years old now. Tried retuning it tonight and I lost all ITV channels. Furthermore, the option to automatically search for channels was greyed out for some time in the menu. It’s back now but retuning makes no difference, the ITV channels are still not showing. I have the latest software installed. No problem with another smaller (22”) smart TV in the house and they share the same aerial through a powered splitter. Nothing has changed for 5 years. The picture is good on all other channels, Freeview play and Fire stick via AV works fine. Time for another TV or is there anything else I can try?