Just a quick check,but sounds okay on my 922.How's your signal quality?If your Q is good try unplugging and give it a reboot.
You using the digital output or the line outs? If using the digital how does it sound on plain old L&R?
Digital.
My DSR-920 and DSr-4200v receive these ok. Your signal is not strong enough to hold signal. Check dish alignment and replace LNB if that does not work. You can buy a 15 degree lnb new on ebay for $10. I have a 6 ft converted microwave dish and just works on 125 bird. If anything changes will get an error like you are getting. My 10 ft dish has no error problems.