We have two Hisense TVs that both allow this. One is Roku based and the other Google TV. Neither is connected to wifi. I’d recommend the Google flavor, it has a lot more control over the settings and will auto suspend in a reasonable period if no input is being sent. The Roku’s minimum auto suspend is 4 HOURS.

They were cheap and the picture quality is great. Not OLED level, but jeeze I had to share a 27” CRT for my SNES as a kid—