Error code 771 message on channels and no picture on local channels

What DVR/Receiver model number do you have?

99% of these problems are caused by dish misalignment. Please post back with your signal readings for each satellite's transponders (and both tuners if applicable). 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.

Fill in your readings for each satellite and tuner using these examples. 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 x x x x x x x x
9-16 x x x x x x x x
17-24 x x x x x x x x
25-32 x x x x x x x x

Satellite transponders (11 total at 119º)
[Not present with Slimline 3 dish. Local SD channels for some cities, Spanish package]
17-24 NA NA NA NA NA x x x
25-32 x x x x x x x x

Satellite transponders (11 total at 99º(ca))
[National HD channels]
1-8 NA NA NA NA NA NA NA NA
9-16 x x x x x x x x
17-24 x x x x x x x x

Satellite transponders (14 total at 99º(cb))
[National HD channels]
1-8 x x x x x x x x
9-16 x x x x x x NA NA

Satellite transponders (16 total at 103º(ca))
[National HD channels]
1-8 NA NA NA NA NA NA NA NA
9-16 x x x x x x x x
17-24 x x x x x x x x

Satellite transponders (14 total at 103º(cb))
[National HD channels]
1-8 x x x x x x x x
9-16 x x x x x x NA NA
17-24 NA NA NA NA NA NA NA NA

See also http://soc.att.com/2iBeG9N