I will try to keep a long story short! Ok, so a bit of a stressful time Sunday. Sky (HMDI 1) had been 'blinking' for a few days (very int, no pattern - literally screen goes blank for a second then comes back) - I suspected the sky box, so switched the inputs for my Sky and PS4. Sky was then fine, on the PS4 input for a good 30mins so I thought I'd test my PS4 on input 1 to confirm the issue. I couldn't get the PS4 to work at all which was worrying (after all sky had been fine just occasional blinking). A safe-mode boot of PS4 got a very fuzzy menu but whenever I rebooted I lost signal - I tried a few tips on the web with no joy. I switched back inputs and the PS4 was fine and sky was not working at all - so HDMI 1 was 'dead'. I then thought I'd try the other inputs...and it seems HDMI 2 is also dead. At this point I had to get on with other stuff so I've left it with the thought of ripping out all the cables (it is a bit of a mess) - ensuring all cables are 4k compatible (and not cheap nasty ones). And resetting the TV...I will do that tonight. In the meantime I'm open to suggestions. FYI the TV is 6 months old and I purchased with the Currys care plan...but I don't really want to lose the TV for 7 days and hope it's returned in as pristine condition as it is now!