I just bought my TV today, i brought it home to my old none HD setup. I setup my old comcast box worked fine but it wasnt HD. I went to comcast got a new HD box, i bring it home and my tv doesnt receive any channels. Ive been on the phone with comcast and sony both, and they both says its eachother. I think its comcasts fault, my other tvs work fine, just my HD one doesnt. Any suggestions?