I've had an HTL9100 for a few weeks, some times it works correctly, and engages automatically when the TV is switched on, but not always.

Some times it doesn't connect to the TV, or turn on, and does not recognise the remote. When I unplug the power cord, and turn it back on, it resolves the issue.

Any advice or idea why this is happening is gratefully received.

It,s connected via HDMI Arc