HI Guys, As with a couple others some teething issues with the new 55x85c. I have everything connected using the ARC HDMI connection form the TV into My AMP. I have a couple issues with Black screen appearing when changing inputs although i do still always get sound. Last night i was playing around and SKY seems stable but every time i power on the PS4 and change input onmy AMP to this I get sound but a black screen. If i switch the HDMI cable to the TV HDMI input directly i see the picture. I have changed all the PS4 outputs etc but no joy. I also have seen he same issue on my Sony Blue Ray player last night. Is this the Old power off at the wall and on trick..or is there a reason for this? I powered off the TV and tried etc but just not the mains socket and im reading else where this may be a temp fix? I was able to use the PS4 the other night OK after randomly just messing about for 30 minutes but same issue occurred last night and its very frustrating!