[bobbecky]

I just read through all the posts on this problem, but never saw anyone suggest checking all your 120 volt connections at the breakers inside your panel in the trailer, and also checking the connections in all the outlets of the circuit going to the 120 volt TV, not just the outlet at the TV. You may have a slightly loose or burnt connection anywhere in the trailer going to the TV, and this could cause just enough of a voltage drop to turn the TV off, especially when, as you indicated, when the water heater was running on AC, there is going to be a slight voltage drop, and that drop added to a bad connection in the 120 volt system would/could cause what you are seeing. To check the connections, I would suggest disconnecting from 120 volt power, or shore power so you are working safely. Also be sure to check all the neutral connections as well. These will be the white wires. They can also cause these problems.