I believe I have a LNB assembly that is bad. More specifically, I believe the multiswitch in the LNB is not working properly. I have tried multiple receivers that all work fine on another Slimline dish. I get random blank channels when I change channels and sometimes I get signal readings on 101 of 0 on all but a few transponders. One receiver did show a Multiswitch error message once and when I tried an hr10-250 it reported a right side error on 110 and left side error on 119. However, on the HR20-700 my problems come with 101. Any Ideas? I have checked the wires and I do not have an external multi-switch. For the record, this is not at my house but for a friend. Thanks for your help.