Soundbar/ARC issues

[Mphood1]

Hoping someone can offer any advice with an issue with a soundbar connecting to my TV.

When I connect my blu-ray to soundbar and then soundbar to tv (Via HDMI ARC) it works perfectly. Picture plays through tv and sound through the soundbar.

However, when I watch tv I have sky connected to the the tv and then the tv connected to the soundbar (again via ARC) and no sound comes out of the soundbar. 

TV - Sony KD-49XG9005 

Blu Ray - Sony Ubp-x700 

Soundbar - Yamaha Yas-109

[Mphood1]

The hdmicec should be enabled by default on the soundbar, but I can double check this. However, that wouldn't explain why no sound is being sent to it?

[rooobb]

Arc won't work without cec.

[Mphood1]

Turns out the hdmicec that is auto-enabled on the soundbar had been turned off. Nothing about it in the UK manual, had to find out how to enable it on a USA manual (soundbar needs to be powered OFF and then HDMI button held down on the remote).

Thanks for your help!

[rooobb]

So I assume now is working also arc? Good!

[Mphood1]

Correct, sound is coming through the soundbar when watching netflix through the TV and TV remote in controlling the soundbar.

Still to hook sky back up to the tv but will keep the hdmi cecless cable in mind if Sky plays up.