I have three DVRs, one of the HR24s today displayed a 763 | Access Card Expired error and to reboot. After reboot i get the 775|Problem Communicating w/ Dish error. I have a SWIM 16 in the attic, one cable runs to the family room where its split to a HR54 and the bad HR24. Another coax runs to the living room HR24. I'm guessing there is a fault in the DVR and to just tell customer support its dead to make it easier in the long run, but thought I'd check here first. I searched for 763 but didn't find anything useful besides cleaning the card.... but that just may be me.