I just switched my service back from Hopper/Joeys to my own, old 722k and a 622. The 622, it turns out was bad and had to be replaced with a new 722k. I'm also having problems with my original 772k. 90% of the time I'll turn the TV on, press select. and get an error 12-11-12 or 11-12-11, and a notice to unplug the receiver and plug it back in. 95% of the time that changes nothing. Other times I'll change a channel, to a channel that is in my "service plan" and it tells me "Programming not Authorized". I've called Dish and they tell me everything is authorized on both receivers. When I try these channels on the new 722k, everything works great. Seems like the old 772k might be "on the way out" too. Is there any way to possibly format the internal hard drive, to see if it will straighten out, or should I just call for a replacement? I'd rather try everything possible before calling them for yet another receiver. I'd appreciate any help offered!