Bedroom TV Snowy Reception

[Bjswift]

Hi, I just recently hooked up a secon TV in the bedroom of my 2015 Outback 316RL. It is a satellite hookup so I had to use a splitter on my tv/ receiver in the living area. The TV in the bedroom has a very snowy picture. I eliminated the splitter and did a direct connection into the back of the satellite receiver and still a snowy picture. I pulled down the outlet from the ceiling in the bedroom and noticed it was a mass of connectors and wires. I proceeded to tighten the connections, which some were loose, and this seemed to fix the snowy picture somewhat. Has anyone removed the coax outlet from the ceiling and noticed all these connectors? Main, question here is, how do I fix this problem of a snowy reception?

Thanks