771 on some channels not all. No obstructions or weather to affectt eh signal

Reset all receivers and checked connections.  That's not the issue.

Hi, there. We are happy to help!

Considering what you have tried, and to make sure we address the issue properly, please let us know:

1. Has there been strong winds in the area? Since some channels are affected there could be the possibility of the dish moving slightly to any direction.
2. Are there any new possible obstructions for the dish? By example, new constructions or trees that have grown in front of the Dish or near the direction it is pointing?
3. Have you moved the receiver recently of location?

Please share with us this information, we'll go from there, also you can check further about error code 771 to take a look at other alternatives to troubleshoot.

Keep us updated! We'll be here to help!

Juan, DIRECTV Community Specialist

No to all three questions.

Unplugged power inserter for 1 minute and reconnected.  Didn't help.

double check all your coax connectors are snug, i got the same error and found the main wall plate from the dish to the dvr was loose from several years of the vacuum cleaner bumping it 

Thanks for that information, @fatboydave. For additional assistance, please provide us your account number.

-Jordan, DIRECTV Community Specialist

Most likely your dish needs to be aligned, there are videos on youtube if you want to try it yourself otherwise you need to call for a tech visit.

Any particular video you suggest?  I have experience with pointing the 18 inch dishes and have a satellite "finder" meter.

@fatboydave, Please review the provided support for troubleshooting:

Get Help With Troubleshooting Satellite

Let us know if this helps!

-Jordan, DIRECTV Community Specialist

@fatboydave, thanks for reaching back out. 

In this case, please provide your zip code, so that we may check for related issues in the area.

-Jordan, DIRECTV Community Specialist

I have tried the troubleshooting in the link and it did not solve the problem. I am in 70535 zip. Sounds like a dish pointing issue but what do i know.

There are no "related issues in your area" that could cause this. 99% likely its a dish pointing issue.

@fatboydave, thanks for reaching back out. 

In this case, if troubleshooting has not corrected the error codes, we are happy to take the next step in scheduling an appointment with a service technician. Your account number is needed in order to create a ticket.

-Jordan, DIRECTV Community Specialist

I am only getting 23% on 99ca and 37% on 99cb

I am having issues with channels like 244, 245, 248,253, 254,258, 265, 269 along with others

Does this mean the 99 sat alignment is off?

Yes. It's actually the whole dish that needs realigning. You can't really adjust the pointing on just one satellite.