TECH BROUGHT A NEW RECIEVER, LOOKED OVER WIRING AND DISH, COULD NOT FIND ANY PROBLEMS, DID REMOVE A SW44, HE SAID WAS NOT REQUIRED WITH A DISH 1000.4 HE SAID IT COULD BE CAUSING A PROBLEM BUT COULD NOT VERIFY. CONNECTED NEW 722K AND BACK UP AND RUNNING. TECH DID A GREAT JOB CHECKING THINGS OVER...