Intermittant sound cutting out - DirecTV

I have spent a few hours with Directv customer support over the past few weeks. They have sent me another mini genie 4k box but it's doing the same thing. All wiring has been inspected. HDMI cables replaced. While watching Directv the sound will turn off. If I turn the mini genie off and back on, the sound works for another hour or so. If I hook up my older HD DVR box the sound works fine. As soon as the mini genie is hooked up, the sound problem starts again. Is this a common issue with the mini genie 4k box? I've been a loyal customer since '09 and I just want to be able to enjoy it again.

This question, "Intermittant sound cutting out," is about DirecTV channels, programming, equipment, and sports.