I have a 622 and every once in a while i lose signal on all sats. When you go to the install screen down at the signal meter it will say spoofed network... then when you go to check switch it takes a while and finally says i have a switch prob. I now have a new receiver new twin lnb (119 110) replaced connections and diplexers. Any suggestions....... The only thing i haven't done is change the 129 lnb, it is a dual lnb so i changed to the other port.