I have a DPP 500 dish and LNBF at my second residence with a 301 reciever and a 501 DVR reciever. I could only watch the same sat (110 or 119) that the 501 was tuned to or I got the error code "switch error". In an effort to correct this, I ran a check switch on the 301 and got a message saying changes had been detected and did I want to save the changes. When I did save the changes, the reciever will now recognize only one Satellite at a time (110 or 119) and it just purges all channels on the other one. I believe the check switch may be a bad LNBF but how do I get the 301 back to the way it was? I tried unplugging and re-booting and restoring factory defults and removing the smart card and replacing.