Hi Jacob, my name is Rusty. I want you to start by bypassing the receiver, and connect your cable/sat box, or Blu-ray player directly to your TV and tell me if the picture improves. This will tell us whether the problem is in the TV or the receiver, then we can get to work fixing the problem. I await your reply.
Ok, and which device did you plug into your TV? It would be best to check with a Blu-ray player.