Just had my old dumb LG TV die after 9 years of working just dandy. I lack the desire to root around for a dead capacitor so I am currently in the market for an approximate replacement to act as the display for my Linux media center in my living room. I figure this is the right crowd for finding a non-invasive TV so my Linux machine can be the brains. I trust modern Tvs less and less.
Desired features
55"
Non terrible audio
As dumb of hardware/software as reasonably achievable
I believe the term you want is “digital signage”. Be prepared that they can cost twice as much as a regular “smart” TV.