Have used Chromecast on Soniq TV and other devices over past 3 years with no problems. However, now I have no sound with some shows within an app e.g. Prime and sound with others. This happens in other apps as well. I have checked sound settings on both Chromecast and TV and tried changing HDMI port to no avail.
Thanks for reaching out. Let's sort this out.
Is the TV connected to an external receiver, soundbar, or speakers? Does the issue persist when casting from a mobile or tablet device and from the Chrome browser? Try the steps below:
Let me know how it goes.