My Vizio 36" TV (cast display 9504 D32f-F1)) turns on well, looks good for around 20 minutes, then gets blurry, vertical lines, and a mess but after around another 20 minutes it clears up and stays clear as along as it's on. I called Vizio and they suggested to "factory reset" which I did, but that didn't help.

marion, August 2022