You will never find a fix Samsung just lie most Samsung tv have a issue with the Key word is  [receiver }. And to be fair some sound bars even if it’s there own make ie Samsung. I have in all rooms a Samsung tv all 4K UHD now if you’re  receiver  Has arc not your tv your receiver then you may be fine but my Samsung receiver home  theatre doesn’t have for months all have been working fine until one day the any-net + stopped working got that back working but still now sound on receiver. Call Samsung they send out 3 people each on different days and dates no1 can fix it they changed the one connect and the main  borad inside still not working so they bring there sound bar and connect the SB to the arc on the tv and the new sound bar has arc works fine but I don’t have a sound bar I have a Samsung receiver/ home Theatre system guy tells me that it’s my old receiver it’s 8 years old and it was working fine but not now and it works fine  by it’s self playing music or watching a DVD  ... View more