Last night was watching DTV without issue. This morning both receivers ( HR21s ) were on, they were turned off/standby last night, and that message was displaying on both. I've rebooted everything, checked all cabling, unplugged everything and then plugged everything back in. When the receivers restart they get through the self test and when the getting satellite bar comes up the error message returns. I'm waiting for DTV's phone service people to be available but in the meantime I thought I would ask what would be the most likely problem. We've had no weather event over the last nine hours that would explain any cable issues. I do have the whole home service with the deca adapters, and swm. Any ideas?