I'm sorry to hear this, please excuse my confusion. Are you having trouble with the Subwoofer disconnecting from the Soundbar? This particular model does not have Wifi, or Are you referring to Bluetooth?
My Samsung HW-J7500 soundbar suddenly started disconnecting and reconnecting to the Internet recently. It does it for both Wifi setup and Ethernet wired setup. It's annoying to hear the disconnect and connect sound notification over and over again while watching something. Does it have anything with recent update? Any solution to this? Used to work perfectly fine, never had the issue before.