Hi, This is a new one to me. Nothing's changed in the home cinema set up in recent months, but in the last few weeks, without warning, the screen blacks out and the sound stops. This can happen at any time, in the menus, poster wall, or during playback. I have changed the HDMI leads over to another one where I know I get a 4k signal across and it still happens. It does not happen when I'm using another source (Sky Q UHD/Amazon Fire TV) so it can't be the amp or the TV screen itself. It can only be the A10. I know it's not the screen saver as that has never been switched on. Anyone else had an issue with this?