Both of my rigs came with CRT TVs, I replaced the Bounder TVs with LED sets, both sets came with wall warts and I just made up power cords myself. The Winnie ,however, has a 32" Class
Sharp up front and it does not have a wall wart so I run it off the factory installed 300 watt MSW inverter. Both of the BluRay players are twelve volt as does the bedroom 19" class set.
I have looked for a 12 volt adaptable LED set but cannot find one, it seems they are available in smaller sizes but not 32" class.
My rig did have a home entertainment system but the original owner took it out when he sold. I don't need surround sound in a RV but I want a sound bar to put the speakers in front and with better clarity. I can and will get a small sound bar with a wall wart.
I'll go with the inverter for now but eventually I'll find a 32" class set that has a wall wart and replace the Sharp.
Just for kicks I ran the bedroom set and BluRay player with a wall wart plugged in to a 75 watt inverter from HFT. My brother runs his printer and charges his computer in the field both from a small inverter with a cigar lighter plug. Neither one of us have had any problems with our cigar lighter inverters running electronics.