One of my TVs is rated to work anywhere, and another is not. All my computer monitors are rated for multiple voltages. For my TV that’s rated 120V only, I think it’s intentionally not certified for 240V because it’s an NTSC model. There might be a fuse set to blow if you plug it in to 240V, but if not, I would be only mildly surprised if it just worked.
One of my TVs is rated to work anywhere, and another is not. All my computer monitors are rated for multiple voltages. For my TV that’s rated 120V only, I think it’s intentionally not certified for 240V because it’s an NTSC model. There might be a fuse set to blow if you plug it in to 240V, but if not, I would be only mildly surprised if it just worked.