Why does my TV screen intermittently black out?

I have a 60 inch Samsung Smart TV. It will intermittently go black with no sound for about 3 seconds. Sometimes it will beep super, super loud very quickly before doing it. It does it very randomly, but it happens pretty often. About 5-6 times every hour. The TV is hung on the wall and doesn't see much movement at all, so I'm not thinking it's a loose connection somewhere. Thank you!