I am sorry to hear this. What is the current firmware version you have installed on this soundbar?
When I use a digital optical cable to connect my tv to the soundbar, the soundbar shuts completely off after twenty minutes. I know it is designed to do this if it doesn't detect any activity, but this is happening while I am watching tv, using the soundbar and digital optical cable. I have tried two different cables. I have also tried turning auto power both off and on. This does not happen if I use an aux. cable, just optical, but that is the cable I want to use for my tv connection. Any ideas are very welcome!