I have a Dish 500 with model 311 with 4 receivers. my problem is that three of the receivers are working fine but 1 my DVR is having trouble. i keep getting an error 002 that the signal is not coming through,so i am not getting all my channels like i get some channels that come from the 110 satellite and some channels that come from the 119 satellite, so it's not one satellite that is down or not working. i'm just getting some from 110 & some from 119. I do not have a switch, so i know that is not bad. this just started two days ago. any help would be GREATLY appreciated. thanks, melissa