I often have to unplug and plug back in the HDMI cable for the service to work. Why?

Contributor

I often have to unplug and plug back in the HDMI cable for the service to work. Why?

I often have to unplug and plug back in the HDMI cable for the service to work.  Why?

:smileyconfused:

Message 1 of 9 (8,107 Views)
ACE - Master
Solution
Accepted by Anonymous
‎09-30-2015 1:39 AM

Re: I often have to unplug and plug back in the HDMI cable for the service to work. Why?

Some TV's have a "handshake" issue between the TV and the Uverse box.  What his worked for me in the past is, 1) Unplug the HDMI cable from the box, 2) reboot the box by pressing the power button until it starts flashing 3) wait about 5 minutes to let the box come back online 4) plug HDMI cable back in and see if the behavior your seeing changes.  Post back if not and we can go from there.

"If you find this post helpful and it solved your issue please mark it as a solution.  This will help other forum members locate it and will also let everyone know that it corrected your problem. If they have the same issue they will know how to solve theirs"

*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
Message 2 of 9 (8,098 Views)
Employee

Re: I often have to unplug and plug back in the HDMI cable for the service to work. Why?

Good morning, velcro-31

Just checking up on your post. I hope the suggestions that beebeesa posted resolved your issue with your U-verse TV box. If you're still encountering this same issue, let us know and we'll make sure this gets resolved. Thank you! Smiley Happy

If you encounter any issues with your service or equipment, I recommend checking out our Troubleshoot & Resolve solutions to help diagnose the issue.
Employee Contributor*
*I am an AT&T employee and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.
Message 3 of 9 (8,098 Views)
Contributor

Re: I often have to unplug and plug back in the HDMI cable for the service to work. Why?

I did this a few times. Still have to unplug HDMI cable and plug back in to get picture or sound. What's next?
Message 4 of 9 (8,071 Views)
ACE - Master

Re: I often have to unplug and plug back in the HDMI cable for the service to work. Why?

[ Edited ]

It could be a bad receiver/DVR if the above procedure does not correct your issue.  Is your HDMI cable plugged straight from the receiver to the TV or does it go thru some sort of A/V receiver or sound bar?  If either of the latter try plugging it directly from the receiver to the TV and test. 

 

If it still has issues, I would recommend that you send a Private Message to the ATTU-verseCare Community Specialist team.  One of the specialists will respond to your PM shortly.  Please look for the flashing envelope at the top right of the page for your response from a team member.

"If you find this post helpful and it solved your issue please mark it as a solution.  This will help other forum members locate it and will also let everyone know that it corrected your problem. If they have the same issue they will know how to solve theirs"

*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
Message 5 of 9 (8,065 Views)
Employee

Re: I often have to unplug and plug back in the HDMI cable for the service to work. Why?

Remove HDMI and install component (5 ends, colored, 3 for pic, 2 sound)
Component from DVR to TV supports 720p and 1080i provided by DVR just fine with no issues.
Employee Contributor*
*I am an AT&T employee and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.
Message 6 of 9 (8,059 Views)
ACE - Expert

Re: I often have to unplug and plug back in the HDMI cable for the service to work. Why?

Coreyholden - As my thoughts suggests replacing the HDMI cable with component cable will eliminate the HDMI problem. It is very important NOT to leave the HDMI cable connected to the STB.

There is one more "band-aid" you can try before changing cables - Try turning on/off the TV before the STB. To do this you need to reprogram your remote as follows - att/ok - 977-tv-att-enter (bottom right). Then reboot the STB to assure it is not in an out-of-sync state before trying the new power sequence.

You can do another variation of this by programming - att/ok-977-enter. This will eliminate the auto power sequence & allow you to delay between power pulses. The power up/down sequence is tv - power- att- power.

If all this is too much, just go for the component cables.
*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
Message 7 of 9 (8,041 Views)
Tutor

Re: I often have to unplug and plug back in the HDMI cable for the service to work. Why?

I had the same problem with a Vizio TV. Worked great with Comcast and various DVD and Blu Ray players, but no signal every time the TV was turned off and on when connected to the U Verse Cisco STB. Unplugging the HDMI cable from the STB and plugging it back in usually restored the connection.
Here's what fixed my problem.
I used the shortest HDMI cable I could to connect the STB to the TV, in this case a 2' cable.
The 10' cable the technician used to connect the TV doesn't work, and neither did the better quality 6' cable I tried. The 2' cable works every time without a problem.
What does this mean?
The problem is probably that the HDMI output from the Cisco STB is lower than most other devices, and the Visio TV is probably pickier than some others about the quality of the HDMI signal it needs to lock on and display picture and sound. A shorter cable has less capacitance, which allows for a cleaner signal to reach the TV input. All of the cables tried worked fine when used in my other TV setup (an LG).
AND, the Vizio has worked fine with the Comcast STB and various other devices.
I tried all the other fixes I saw in these forums, to no avail.
The short cable fixes my problem, and may work for you as well.
Message 8 of 9 (5,335 Views)
Contributor

My TV does the same thing

My TV does the same thing
Message 9 of 9 (4,626 Views)
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