I have just bought a new bose soundbar 700 . I connected it to my Tv UA55KU7350RXEG SW version 1231 , trough HDMI arc and it worked fine . After a while , two or three hours , it stopped to work , I cannot hear any sound coming from tv or satellite decoder . I tried more than one time to restart the anynet connection but simply it fails to recognize the soundbar and the only way to use it is by optical cable. I’m very frustrated! Can anyone help me?