A couple of years ago we replaced our low resolution 120V 26" Jensen 720p LCD SDTV with a 12V 32" Jensen 1080p LED HDTV from a mechanic at an RV dealer that was a "take off" off a brand new larger RV. It uses much less power being both LED vs. LCD and 12V vs. 120V (which requires an inverter when not connected to shore power).
Now there are much cheaper 12V options available like this one https://www.amazon.com/SuperSonic-10.../dp/B0066AE4M8
There's no downside with installing a 12V HDTV... and it is MUCH more energy efficient + lower heat generating than running a 120V HDTV and inverter.
Since we boondock we rarely have OTA ("Over The Air")antenna or CTV (Cable TV) so we use our HDTV to watch movies we've transferred to our iPad Air 2 from our TiVo... or share the awesome pictures we took on that day's adventures with our iPhone 7, iPhone 7 Plus, and Canon 20D digital SLR. Amazing how much better these pictures look on an HDTV. Literally eye opening!