Sound intermittent when Coaxial output to AV amp

[Edoedo]

When coaxial output to my Anthem MRX710, the sound always intermittent but not happen when output with Line out. I did check the wifi signal and change to different sockets. Even switch on and off the light, the sound will be Intermittently. It seems not good for listening music

 

[goodmore]

Make sure the coax cable gets inserted all the way into your WiiM.