Choose a surround format on Google TV Streamer
Start with Automatic, then test one supported format if the Streamer works in stereo but goes silent through an AV receiver.
IPTVBlogs editorial desk · 
Establish that stereo reaches the receiver
From the same app and input, play a programme with a known stereo track. Check that it reaches your TV speakers and then your usual soundbar or receiver. If neither plays, resolve the basic output and input selection first. If stereo works but the surround track is silent, record the programme, track label and receiver display before changing the Streamer.
Change one surround setting at a time
On the Google TV Streamer, Google documents surround format selection under Display & Sound and advanced sound settings. Begin with the automatic setting. If a supported format has to be selected manually, use the receiver’s specifications and choose only a format it accepts over the connection in use. Replay the same scene and restore Automatic if the manual change makes other titles fail. A menu checkbox indicates an allowed output setting. The programme still needs a matching audio track.