Do you really need pure sine wave for your tv's or are you happy with your modified sine wave inverter. My 750 Tripp lite inverter took a dump and now need to replace it. BTW it was not pure sine wave...
No, you do not need PSW for your TV. The TV is going to convert it back to DC anyway taking the sine wave out of the equation. A few pieces of hardware do work better with PSW (clocks keep accurate time and microwaves work as they should) but most pieces of hardware in your RV will work just as well with either unit.