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Why Is My AT&T Broadband Blinking Red?

Last Updated Nov 11, 2021
at&t modem

Issues with the internet can always be a pain. We fear the moment when our favorite devices stop working and go to check on the broadband device, only to find a red blinking light. There can be multiple reasons as to why your light may be blinking red but it always comes back to a bad connection to the servers or a fault in the device. 

When your AT&T broadband is blinking red it means there is a problem with the power supply of the device or its connection to the servers. No internet access can occur due to several reasons, like loose cables or AT&T servers that are down.

When the internet is down it is always a hassle, especially when many of our day-to-day tasks require a connection. If your AT&T broadband is blinking it can be a variety of issues, but knowing what to look out for can help you get your internet back in no time. 

Why Is My AT&T Broadband Blinking Red?

If your AT&t broadband is blinking red it means there is an issue with the device. A power issue or connection problem.

Some common reasons why the AT&T broadband will blink red include:

  • AT&T servers being down
  • Power issue to the device 
  • Trouble connecting to the servers due to faulty connections
  • Updated needed for device 
  • Faulty Hardware 

If you do not know what the issue is it can be a matter of trial and error. While it may be overwhelming, fixing the issue is usually simple and can be done fairly quickly. Below we will go over how to fix any of these issues easily. Most of it can be done by yourself, but if you continue to have issues calling a professional will be your next best option. 

If you would like to learn more about troubleshooting your WiFi, check out this article.

How to Troubleshoot When AT&T Broadband Light Is Blinking Red?

When your AT&T device has a red flashing light on, some troubleshooting is needed to help solve the issue. One of the first and easiest things to look out for is if the At&T servers are down. If the servers are down then there is nothing you can do, but wait until they are working. Looking at their website can show any issues on their end. 

Checking if all of the sites and cords are connected is helpful if there is a loose wire causing the issue. If none of this helps then you can also try representing or updating the hardware. 

Resetting The Modem Or Gateway

When looking to fix the issue, resetting the device is a quick and reliable way to try and solve the issue. If there is a problem with power unplugging the gateway for 30-60 seconds will reset it and solve and perform a power cycle. The modem or gateway will turn off then reset and reconnect to the other devices. Wait a few seconds to see if the lights return to normal. 

Factory resetting your device will also reset it and return it to its original settings. Using a paperclip press the small button, usually located at the back of the hardware and is the size of a paper clip. Hold it until the lights go off and reset. 

Updating Hardware

Out of date firmware can give you issues and restrict what your device can do. Checking if you have the latest update is your next step.

To update an AT&T gateway you should:

  1. Connect your gateway or other devices to a computer with an ethernet cord 
  2. Type IP into a browser 
  3. Enter information to log in to the admin
  4. Select software update to see if one is needed
  5. Update device 

You can also try updating it through the AT&T app. If you have the latest firmware in your gateway or modem then you may want to contact support for further help. 

Contacting Support 

If you have tried to troubleshoot with different methods and none of them are working, then contacting support will help you figure out what to do next. If your device is faulty then you will need a replacement or repair. AT&T support will be able to diagnose the problem and will tell if you need a full-on replacement for the device. 

Final Thoughts

Hopefully, this was helpful for when you are having trouble with your device. If there is a red flashing light on your AT&T broadband then doing some of the steps in this article should help solve your issue. If you can’t figure out what’s wrong then calling support is your next best step. Support is available 24/7 and will solve the issue as soon as they can.

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