Test it with a 5.1 audio track and see if you hear anything. Make sure you are playing a 5.1 soundtrack: by default, stereo audio may only appear in the front speakers.If you have a 5.1 or 7.1 surround sound system, you might not be getting sound on just the rear speakers – while the front speakers are working fine. If so, you can troubleshoot just that device. It might be a problem with just one source. Or, try connecting a new device to a different input. Try different sound sources: is the sound not working for all content sources? Try a CD player, DVD player, game console or TV sound from an app.Check the amplifier’s source input setting: do you have the correct sound input selected on the amplifier?.It’s probably an issue with the source you are trying to play. Do you hear anything? If you do, then there’s not a major problem. Play a test tone: in most AV receivers, you can play an internal test tone signal to each speaker.The correct channel to the correct speaker.

Check the wiring: make sure the speaker wire is securely connected to all your speakers.Make sure the volume is up: did someone turn the volume to zero by mistake? Or is the audio muted?.Make sure the amplifier is switched on: yes, I know it seems silly, but sometimes the answer is the obvious thing.However, the solution may be something simple. If you are just not getting anything from your surround sound speakers, you have a significant problem.

Dolby 5.1 surround sound test