To my knowledge your AS doesn't have any
12v outlets (my 2020
Caravel does not) so you'd have to use your inverter or be on shore power to power up any TV you get. Any TV that fits into the space of your current one will work just fine. There are a lot of good TVs under $150 in the 22-26" range that have all kinds of inputs and outputs.
My
Caravel has one 24" TV that only had one HDMI port. I was able to get a replacement for around $100 that had multiple inputs and an audio output (my goal was to get the TV audio over the in-house speakers).
Any TV made in the last 10 years should have the standard 4-hole VESA mount points on the back so you can just take the current one off of the wall-arm and replace it with the new one.
Hope that helped!