I have just purchased this new TV. With my old LG TV I had no problem connecting TIVO box to (Maxell) soundbar and then to TV.
It all worked perfectly.

I have tried the same connection route with new TV and can't get the soundbar to work at all.
I can't see why this is so as the connections seem to be identical. At the moment I can only get the TV to work by direct connection to TIVO box with SCART/HDMI lead.

Where am I going wrong or is there a compatibility problem here? All help/advice welcomed.