I had a similar problem and it turned out to be the splitter located behind the living room tv.
I had to remove the TV and the accessory plate to get to it.
I went to radio shack and spent $14 on a good splitter and that seemed to solve the problem.
I happened to have a spool of cable and a bunch of connectors so I replaced every cable I cound reach.
A couple of the cables seemed to be ok but two had loose connectors and they came apart in my hand.
Shoddy workman ship.
She works great now.
2009 Flagstaff 8528 RKSS
2007 Toyota Tundra DC 5.7L V8
Pullrite Superglide 14K
Air Lift 5000
Prodigy Brake Controller
"I've got a mind like a steele.. a......a steele......um.....uh...... what's that thing called again?