Likewise, the TV in our 04 Roadtrek wasn't a digital. Interestingly, even when plugged into shore power, the TV was powered through the inverter and then a plug-in converter to convert back to 12volts. I decided to forgo the conversion-inversion-conversion and just get a 120 volt TV. I found an inexpensive one at Best Buy and installed it on the existing bracket with a little modification. Despite winter temps in storage and the vibration of an RV on the road, this inexpensive option is doing fine. I use the TV input for TV and cable via an A/B switch, the AV input for the DVD and the HDMI input for the satellite. Works well.