Automatically powering on and displaying HDMI 1 is exactly my minimum requirement. I want to use the TV as a 42" UHD monitor.
The TV will replace a 27" FHD monitor running a slide show of travel photos on our dining room wall, driven by a Raspberry Pi that's always on. To save energy, the monitor is turned on by a motion sensor, and turns off after two hours, so it needs auto power on.
If it turns out that store mode supports switching inputs using the remote, as TCL tech support said, that will also allow viewing cable TV through another HDMI input. That would free up an existing UHD TV in the same room. We don't do much streaming, but if it's not available in store mode we could add a Roku stick if desired (some irony there).
All TVs must have a store mode - just look at the TV section of any department store. But in a week of poking around, Roku is the only OS I've come across that lets users freely access store mode.
OT - More about the project: This slide show display has been on the wall for the past 20 years, originally on a 1024x768 display (IIRC) driven by a small dedicated Windows 98 PC, which was replaced by a Raspberry Pi in 2017 and upgraded to a higher resolution Pi 4 this year. The current 27" FHD monitor is hung, not mounted, on the wall, and the shape of the back case requires hanging it upside down. So the pictures, on a USB stick, are likewise upside down, so they display right side up. The slide show also runs on my computer on a wall-hung second monitor. It currently contains about 2500 travel photos from around the world.
Sorry to drone on OT, but perhaps some may find it interesting, particularly those who take hundreds of photos and then never look at them.
