i have a dual LNB going into a multiswitch and 2 cables go to my DVR in the living room and 1 goes to my receiver in my bedroom. it has worked fine for 8 years. i come home tonight and neither of my receivers can get signal. I did a test on my DVR and it doesnt even seem to be seeing the LNBs. Is it possible for a multiswitch just go out over time? it is a non powered one.