To anyone out there with a real technical kind of mind, let me begin with the problem that I am suddenly having with a Yamaha YAS-108 sound bar that I purchased for a friend in 2017. The original bar was replaced this year by the manufacturer due to a problem with the original one which was playing fine up until somewhere in 2018. The TV this is connected to is a 2016 55-inch Samsung KS8000 SUHD which has a One Connect box for the input connections. The problem is that I cannot get any sound from the bar when connected to the ARC inputs on either the bar or TV. I've tried different HDMI cables to make sure that it wasn't the cables and even connected other devices to the one connect box to ensure that the box was not the problem. To no avail, the TV doesn't even recognize the sound bar in the ARC connection input or in any other for that matter. I don't know if it is a simple setting on the TV that is off (or on for that matter) or if there is something not set with this type of bar itself. Have also tried resetting the bar and pulling the plug on it to try to reset to default settings and get sound out of this thing. I am at my wits end on this. Is there anyone out there that knows about this particular bar or similar problem that can help me with this PLEASE! Any assistance would be greatly appreciated. Sincerely, Lamont S.