After yesterdays's dead receiver fiasco, I was able to get both HDDVRs to work again by doing two RBRs. That seemed to do the trick. My wife watched TV for several hours with her HR21 without complaint, but I only did a cursery channel check on the HR23 to make sure it was up and running again and then turned it off. After coming home at 1:00AM this morning, I find that my HR23-700 is not working, but my wife's HR21-100 is working fine. So after two unpluggings and several RBRs, all I've managed to get are the following messages alternating for about five minutes; Searching for satellite info... Receiving satellite info... 0% complete Eventually followed by, "Acquiring guide data...If nothing happens within 2 minutes, do a RBR. If still nothing, check the dish--make sure there's not a tree on it. If still nothing, call customer service with a 772". (I paraphrased that last part.) So finally I checked the Signal Strength Meter. Tuner 2 is OK but tuner 1 is all zeros. What does that mean? Should I call to get a service tech out? I have subscribed to the extended service since I started with DTV, so will the visit cost me anything?