Greg is in a rural area and he has a Panasonic Viera LCD. He got a new Asus router, but it won't work with it. Leo says he doesn't like smart TVs because they're dumber than a box of rocks. It's obvious that it can't connect. He could try running an ethernet cable to it. That's how Leo connects his Viera. Sometimes it takes a few minutes for the TV to realize it's online, so let it sit for awhile. If he can get onto any channel, then he can eliminate a hardware issue.
Leo doesn't think it's a router issue. It may also be a settings issue. The bottom line is that smart TVs aren't really that smart. Let Roku make one.