no any channel display

[jojoi]

hi every body. i dont know what i'm done but my vu solo dont display any channel .i tried to change channel list but that's not work plz help.
3 day ago i updated 1.7.2 then restor a backup first day i works good but suddenly i saw not displaying any channel

 

[yashar1357]

Hi before of all, check your cable and all connection from LNB to receiver . if ok, then check your setting .

 

[jojoi]

hi, dear yashar already checked them all, and i must say when i go to setup-->service searching-->satfinder i have AGC=99% and SNR= top down to 22% to 45%

 

[a911]

hi, dear yashar already checked them all, and i must say when i go to setup-->service searching-->satfinder i have AGC=99% and SNR= top down to 22% to 45%

Its the dish position alignments and LNB adjustments!
Had this few days ago,,,,,,and now all OK!