I have a Samsung TV model UN65MU8000 and I have been having issues with my One Connect. I thought it was the Bose 300 Soundbar connection to the HDMI ARC port and then started having troubles connecting the Apple TV on HDMI 1 port. I have tried to connect the soundbar with an optical cable but was unsuccessful. The One Connect just stops recognizing devices connected to it. I tested the soundbar with another TV and did not have any connection/sound issues. Problem has to be with the One Connect. I spent many hours troubleshooting the TV and device connected to it without any luck. I have tried everything except replacing the One Connect. I am not happy with Samsung and the quality of this TV. I have read many forums and I am not the only customer who is having this issue with HDMI and ARC ports. Sounds like Samsung made a faulty product and is leaving their customers with an expensive paperweight. I purchased the TV in March 2018 and started experiencing this issue in early 2019. I have given up and thought I would reach out via this community for help.