Bear with me, as I'm an intermediate-level user. Suddenly, my HD receiver in my basement stopped pulling in a signal. I saw the "Problem Communicating With Dish (775)" message. I did a red-button reset, and when it got to Step 2, it never got past 0% before it showed the similar "There is a problem communicating with the satellite dish (775)" message. I checked my other HD receiver. My wife was watching Indy local NBC, but she said it suddenly stopped showing her NBC program and switched to a program from iON. I turned to the local CW affiliate, but it was showing Galavision (or one of the other Spanish channels)! Then it wouldn't tune into anything. I checked our SD receiver, and it was working just fine. So I called tech support. They told me to locate the SWM (a PI-21), which is in an Onq box. I unplugged it and plugged it back in. The green light is on and the unit is powered up. I reset the basement receiver again -- same problem (775). The SD receiver is still working normally, and it apparently stayed on when the SWM was unplugged. I have also red-buttoned the other HD receiver, but I get 775. She set up a service call for Wednesday. Any thoughts? What about the incorrectly mapped channels that I saw for a couple minutes?