U-verse Blinking / NAD M17v2i compatibility

Let's see what we can do to help you get rid of the blinking picture while your sound processor is connected, donlduck.

Troubleshooting is a good starting point, so let's use the Troubleshoot & Resolve Tool on your U-verse TV.

1. Press Menu on the U-verse Remote Control.   
2. Scroll down to Help, then press OK.   
3. Select Information.
4. Scroll to Troubleshoot & Resolve, then press OK.   
5. Select the area you want to troubleshoot.   
6. Allow the interactive diagnostic test to run and complete.   
7. Follow the onscreen instructions to attempt to resolve the issue online. Other options may include dispatching a technician or speaking to a Customer Care agent.

Let us know what you found! We'll be here if you need further assistance.

Aminah, AT&T Community Specialist

Not sure if this matters but u-verse dvrs and set top boxes don't provide 1080p.  They provide either 720p or 1080i depending on what you set them too.  There was briefly a period of time where 1 model of box I had would list 1080p as a greyed out option but at&t removed it since their feeds don't support 1080p anyways.  

Thanks.  Not sure how to fix if that's the problem.

As an option of last resort you can always use an optical connection instead of hdmi for audio.

Thanks.  Interestingly enough, the blinking does not affect audio which continues without any blips and blip does not record onto DVR, but playback from DVR still blips, but if rewind and replay blip is not present at spot where first viewed.

We're happy to help with your U-verse blinking, @donlduck.

We have information on how to troubleshoot your U-verse service. Scroll down to the fix picture problems on your U-verse TV and follow steps to troubleshoot. We also recommend rebooting your gateway to refresh your connection. 

Let us know if this helps. 

Elmi, AT&T Community Specialist.

That could be a problem with hdmi hdcp(copyright protection att uses).  Try a different hdmi cable.  That or there could be damage to hdmi ports.