My first question would be - has your satellite worked properly previous to buying this new receiver for Christmas? If so - I'd suspect a receiver issue.
Next - you need to make sure ALL of your connectors (not just the ones behind the plate) are connected properly. We bought a new Columbus 320RS this year and had the same problem with a satellite receiver I had used with our previous 5th wheel.
At first Forest River told me basically "you're going to need to replace all of the connectors because the ones we used were flawed". I explained to them that I didn't buy a "fixer-upper" and THEY needed to fix the cable.
Ultimately Forest River did send a repair guy out and he had to remove and replace a total of about 8 or 10 connectors and short pieces of coaxial cabling underneath. It was a several-hour job for him.
But, it's worked great since then.
Robert & Estha Shiflet
'12 Columbus 320RS - 2015 Ford F-350 King Ranch & 2010 Ford F-250 King Ranch
Nights Camping 2012 & 2013 & 2014 & 2015: 458 ~ Nights Camping 2016: 95 So Far