I have an H20-600 that has been displaying nasty horizontal lines across the screen. It's bad enough that at any resolution, the quality is unwatchable. Forget HD, it looks like bad SD. It doesn't matter if the signal is coming from the sat or my OTA antenna, which I have diplexed from the attic, and the lines are even present in the guide and menus. I've tried replacing the component cables from the sat to the monitor, even bypassed my receiver to see if that was the problem. And no, my monitor doesn't support HDMI/DVI. It doesn't seem to be the monitor, because the lines aren't present when using its tuner. Is my unit shot? I certainly hope not, because the whole idea of buying early was so that I wouldn't have to lease.