Unhooked the "cable in" cable and hooked it to the "satellite in" on the receiver box, then ran another cable from the receiver "to TV" to the "cable in" on the selector box. Then moved the switch on the selector box to "cable". All four TV's then showed the same problem.
Note: problems I had to fix
With the hot water tank filled with water and driving home, the painted outside of the body "poked" out at the bottom a couple of inches - very unsightly for a brand new motor home - due to the weight of the water in the tank. I had to fix it with braces underneath.
The entrance door "dragged" very bad, making noise and also making it hard to open and close. I ground down the "bead" on the door where it was dragging and scratching off the paint.
If you need to contact me - sonbryant@hotmail. com