I am having a problem with My phase 3 6412. I have a samsung HD tv and when I hook up the HDMI cable it says I have no signal. I have the box set to 1080i and 480i. when I hook up the component cables the HD works just fine. When I switch to the HDMI it has a green haze and then disappears saying no signal weak signal. i don't know if the HDMI cable is bad or the box is bad. Anybody had a similar problem?