Weird picture glitch
So my original Vizio TV continued to play sound, but the screen was just black, ended up contacting VIZIO and they sent her a replacement, but then that replacement was cracked. So they claim to be sending another replacement, but I had already got another one from Walmart. I got the VIZIO quantum 4K Smart TV, and it was perfectly fine when I turned it on the set up was fine. Everything was running smoothly but then a couple days later this weird picture glitch popped up on my TV and I’ve tried everything to fix it and I can’t. So I was just wondering whether or not this is something that I just need to get a replacement for or if it is a problem on my part.
Does anybody know why it’s doing this ? Can it be fixed or will I just have to get another tv ?