I recently purchased a Samsung Q6F QLED TV and when I first set it up, I had my Phillips sound system connected through HDMI ARC and it detected it no problem. It was set as the default sound and the One Remote would automatically turn the system on/off with the TV. This was yesterday. Today I plugged in our cable box and suddenly the TV wanted to use that for sound now. I have unplugged that box and now the TV won't even recognize my sound system. I've tried everything. Changed the settings in the TV, did a factory reset and set it up exactly like I had before but nothing will work. Please help!!