Thursday night, my 622 started dropping signal every 30 seconds. I would get the 004 error to go up or down channels and reboot if it happened more than once. Rebbot didn't work, multiple times. I called DISH who had me reboot and finally scheduled a tech. It has settled down a little to just a pixelation and sound drop, but it's still every 30 seconds. The 622 upstairs works fine - no dropouts. When accessing signal strengths, they are constant. Therefore, it's something in the receiver itself causing the signal disruption. So the question is...What happens every 30 seconds in a 622 receiver? I think that a new receiver will probably be in order. Tech out on Monday.