searching for signal

Let us take a look at your signal strengths.  Do you have any other receivers?  If so, do they all have the problem?

You'll find these readings under "Menu" -> "Setup" -> "System Setup" -> Satellite -> "View Signal Strength".  Note the "+" and "-" symbols next to the "Satellite" and "Tuner" entries where you can toggle the readings between the various satellites and both DVR tuners.  If you have a DVR it's important to check BOTH satellite tuners.

Fill in your readings for each satellite and tuner on the new post you create, using the example below as a guide. (The example below is only an example and not a form that will appear in your post unless you "cut" and "paste" it.) A properly aligned dish will show 80-90s on most of the relevant transponders (although some will be low or zero):
 
Satellite transponders (32 total at 101º)

[Most of your standard definition channels are beamed from 101ºW]

1-8    #   #   #   #   #   #   #   #

9-16   #   #   #   #   #   #   #   #

17-24  #   #   #   #   #   #   #   #

25-32  #   #   #   #   #   #   #   #

Satellite transponders (3 total at 110º)

[A few HD channels, also beamed from 99 & 103º]

1-8    NA  NA  NA  NA  NA  NA  NA  #

9-16   NA  #   NA  #   NA  NA  NA  NA

Satellite transponders (11 total at 119º)

[Local SD channels for some cities, Spanish package]

17-24  NA  NA  NA  NA  NA  #   #   #

25-32  #   #   #   #   #   #   #   #

1-8      69 83 56 74 57 81 49 81

9-16    52 83 47 64 54 93 51 85

17-24  53 81 51 70 58 83 51 81

25-32  50 87 49 60 55 81 49 83

Those signals are really poor, your dish needs realignment. Call DirecTV - a realignment will be free if you have the protection plan,  $50 otherwise..