I found that if your cable connects outside that first leads to the bedroom and then to splitter to the booster in the front, 99% of the time it won't work with the new digital TV's. CG cable doesn't work on my MH anymore since the change over.
Someone on the tech forum had a fix for that. He said the new digital doesn't like the splitter part of it.
The last CG I was at they told everyone to run the cable thru a window directly to the booster. THAT did work.