[RobSC]

Try all inputs on the A/V receiver as well as all the inputs on the TV.  If the TV is close to the A/V receiver, then verify there is an HDMI cable running between the two.  If the TV is in another room, Newell likes to use HDMI over Cat5 extenders rather than a long HDMI cable run.  I have had to replace two of these in my coach.

I hear you on the not wanting to call Newell on TV issues.  I also draw the line on that one.  You'll find your your answers here, just may take a little longer.