Volume increases on own

[Catels]

600A sound bar sound volume goes up on its own to a high volume.

[LukeB2]

Have you tried disconnecting and connecting your soundbar @Catels ? If this doesn't work, you can reset the soundbar by pressing the - and + buttons together, this should resolve the issue. 

[Catels]

This solution did not work.  The volume goes up to a mind boggling volume every 2 or so minutes.  Makes the device unusable.