Direct tv triple lnb

I have the same antenna. on the setup it shows like is getting signal from the 110 , 119 but at the bottom it says nimig 91 is not saying 110 or 119 even after moving antenna to diff position where i still get signal. the weird thing is that when i put on diff antennas and block the signal with my hand nothing happens when i block 110 or 119 lnb but the third on the right i believe its 101 that one does work , the signal drops but nothing happens with 110 or 119. i cant even get channels from it, does that means i have a bad Lnb swtich?