Have you connected your Apple TV and PS4 to the HDMI with good quality HDMI 2 cables of less than 2m in length, likewise from the soundbar to the ARC output of the Samsung TV. Have you enabled CEC on the TV and Apple TV, the later would not be possible of course if you don’t have a picture of course. Failing that have you tried different HDMI cables
Hi and thank you for the reply. Apple TV is connected with this cable. I have no reason to think it's faulty as this works flawlessly connected directly to the TV (chroma subsampling 4:2:2). The soundbar is connected to the TV with the cable supplied in the box, although I have already ordered 2 more Belkin HQ cables (just in case). CEC is ON, on TV and ATV and anynet+ ON in soundbar. However I made this work the very first time I connected everything but it doesn't work anymore. I still haven't upgraded to the latest version of the firmware as many users have reported to make the device worse. What firmware version do you guys have?