Tried to use 501 this morning - nothing but top 120- couldn't get locals or top 180 channels. We did have a thunderstorm blow throught last night. Two other receivers in the house are working correctly. Called Dish and they had me troubleshoot by unplugging, check switch, etc. Also had me bring in 301 from Bedroom. It won't pick up locals or top 180 either. They are dispatching out repairman on Sunday. Any suggestions on how to fix myself before the repairman gets here. They thought the problem would be in the cable or the switch. Thanks for any assistance.