Sound problem with NAS video

[sujitpatel]

I have a KDL55W829 and a Synology 214play NAS. On the TV I can watch the movie on the NAS with sound but there is no sound once the Amp is on. 

The Amp works perfectly with Sky / cable option.

[sujitpatel · Accepted solution]

Sorted!

Needed an Optical cable between TV and Receiver. Receiver does not support ARC.