It was working fine last night, I have never had an issue with it, and I haven’t done anything with it (ie, change settings etc) but I just switched on the TV so my wife could watch Wimbledon in the background – all was fine when I switched it on and navigated to BBC1 on iPlayer and selected BBC1. I then tried to adjust the volume and the TV went blank. I have tried several more times and the same happens each time – a small ‘pause’ button appears briefly and the screen goes blank. It does the same if I select volume up or down or just press the mute button on the TV remote (ie, not the Fire Stick remote). Any ideas?