Sound cuts out after being turned on for 30 seconds

When I turn on my tv, the sound is fine then gets choppy after about 30sec and completely cuts out. The only way to get the sound back is to change the channel. It’s not any particular channel and it happens when I use fire stick as well. I have to turn on the satellite box, turn the channel, and turn the fire stick back on to get sound there as well. Any help is appreciated!