I have a problem with my 322 receiver that started yesterday. The problem is: One TV will state requiring signal yet it never does. Then, TV #2 will do the same. I cannot operate TV#1 and TV #2 at the same time. when I contacted Dish Network, they stated that I would have to have a tech come and fix the check switch problem. I will be upgrading to a ViP 722 on Wednesday. The new receiver may not remedy the problem, but I am willing to give it a try. Any sugestions appreciated.