I turned on my HR20 15 minutes ago. All the blue lights came on, but there was no picture on any channel. Black screen. No "searching for satellite" or any other message. Just a black screen. The channel banners worked fine. I was able to check satellite signal strengths, and they were slightly weaker than baseline because of cloud cover, but nothing below 77. I tried to play back a previously recorded program, and I also got a black screen. I run upstairs to the TiVo, and the channels were working fine there. I felt like I was about to have a heart attack. I did a RBR, and everything was restored, but not before I was drenched in sweat. This has been my first HR20 hiccup, so I can't complain, but it was a heart-pounding last few minutes, I tell you!