I used it for the first time yesterday with no issues. Turned it on today and there is no sound on any channel. I am using BuzzTV 4000.
I have changed HDMI cables and ports. Turned it off and on, even reset the box. No sound on any channel. When I switch inputs to my smart Tv sound works fine. Not sure what else I can do. Would welcome suggestions.
Additional info, I have a Vizio soundbar that I tried to unplug and see if the speaker on the TV would work. no luck there.
Check if your box has multiple separate sound levels. If it is based off Android​ and not Android TV it has separated volume for media. Many times people turn that down by accident and then wonder why they have no sound with full Master volume.