6 Ways to Fix LOS Light Blinking Red on Huawei Router 

If you see the LOS light blinking red on your Huawei router, you are in the right place. LOS, or Loss Of Signal, means that there is a problem with the signal reaching your device. This means that the internet on your router won’t work. If you are looking for ways to fix it, keep reading. We will share a number of ways to fix this issue and get your router back to normal.

Why is the LOS Light Blinking Red on My Huawei Router?

There could be a number of reasons why the router’s LOS indicator is blinking red on your Huawei router. When the LOS indicator starts blinking red, this usually means that there is a problem with your internet connection. Here are some of the most common reasons why this happens:

  1. Disrupted or Poorly Connected Cables/Connectors: Issues with cables or connectors can lead to signal loss and trigger the LOS indicator.
  2. Physical Damage to Cables: Cuts or breakages in the cable can disrupt the signal and activate the LOS indicator.
  3. Router or Cabling Damage: Pin or fiber optic damage in the router or cabling infrastructure can interfere with the signal transmission, which leads to a loss of signal and thus causes the light to blink red.
  4. Pending Bills: If you have pending bills, your internet connection may be temporarily restricted, causing the LOS signal to blink red.
  5. ISP Site Issues or Planned Maintenance: Your ISP may have an issue with the internet connection, which needs maintenance. Thus, the issue can also appear when planned network maintenance or technical problems occur at the ISP site.
  6. Misconfigured Router Settings: Improper router configurations or unsuitable setups can disrupt signal transmission and cause the LOS to start blinking red.

How to Fix LOS Light Blinking Red on Huawei Router?

Now that you know why this issue is, let’s look at the solutions. There are many solutions to try, depending on what’s causing the issue. So make sure to try them all until the issue is fixed.

Fix 1: Perform a Power Cycle

One of the common troubleshooting steps for fixing internet connection issues is to restart your router or perform a power cycle. Restarting your router can help resolve temporary glitches that might be causing the LOS to blink red. Follow these steps to restart your router:

  1. Locate the power cord connected to your router.
  2. Unplug the power cord from the router.
  3. Wait for about 20-30 seconds.
  4. Plug the power cord back into the router.
  5. Allow the router to power up and establish a connection, which may take a few minutes.
  6. Alternatively, you can press and hold the power button for 20 seconds to turn your router off and hold the power button for 30 seconds again to turn it back on.

Alternatively, you can restart your router via the AI Life app.

ai life app
Credit: Huawei

If the LOS (Loss of Signal) indicator persists after restarting, continue with the next troubleshooting steps.

Fix 2: Check your Cable Connection

A loose connection means your router won’t be able to connect to the internet, and the LOS indicator will start blinking. Therefore, it is essential to ensure that your cables are properly connected. Follow these steps to check your cable connection:

  1. Inspect the cables running from your Huawei router to the wall jack or ISP equipment.
  2. Make sure the cables are securely plugged in at both ends.
  3. If you notice any loose or disconnected cables, remove and reinsert them firmly to establish a proper connection.
  4. Examine the cables for any signs of physical damage, such as cuts or breaks. If damaged, consider replacing the affected cable.
Cable Connection
Credit: Huawei

Fix 3: Check for Damaged Pins

Whenever you get the LOS (Loss of Signal) warning, it means that your signal is weakening, and you should check for damaged pins on your router. If the pins are bent, you can try to fix them. Otherwise, you need to replace the circuit board, which is usually more expensive than buying a new router. Follow these steps to check the pins on your Huawei router:

  1. Disconnect all cables from your modem/router.
  2. Check the cable ends to make sure the pins are in the connections.
  3. Now, check for pins that are bent, damaged, or rusted.

You can try to use tweezers or any other tool to restore the pins and see if the issue has been fixed. However, doing so can be extremely complex, and your only option would be to get the circuit board replaced. In this case, you’d just be better off buying a new router. If the LOS signal still appears, continue with the troubleshooting process.

Fix 4: Settle Overdue Bills

ISPs have been known to disable accounts if payment has been overdue for an extended period of time. Your internet service provider may warn you and then promptly disable your connection, or they may give you a grace period of a few months. If the LOS (Loss of Signal) indicator appears on your router because you have not paid your internet bill, you must do so immediately.

Ensure you immediately settle any overdue payments with your internet service provider (ISP). You may avoid late fines and missed deadlines by using calendar and reminder apps on your smartphone.

Get in touch with your internet service provider (ISP) if you lose access to the internet because of a payment dispute or suspension. They will tell you how to fix the problem and get your network back online. If you have no pending bills, move on to the next solution.

Fix 5: Check for Downtime Due to Maintenance

Internet access could be temporarily unavailable due to weather-related outages during periods of heavy rain, snow, or flooding. In such situations, contacting your ISP and asking them about the maintenance status is best. They should update you on the status of the repairs and provide an estimated time frame for when everything should be back to normal.

Moreover, ISPs schedule regular equipment maintenance to ensure the internet runs properly. They alert customers via text messages and media announcements before these maintenance windows. If you didn’t receive any such notice, contact your ISP immediately and enquire about the situation.

Fix 6: Reset your Router

Your router’s LOS indicator may flicker if your network settings are incorrect. The manual for your router will have specific instructions for configuring it. To fix any misconfigurations, you can reset your router to its factory settings and see if that helps fix the issue. Here’s how:

  1. Find the Reset button or the reset hole on your Huawei router. It is usually located on the back of the router adjacent to the ports.
  2. Take a paper clip or something of that sort, insert it into the hole, and press the reset button for about 30 seconds.
  3. Release the button once done.
  4. Now, you can use an Ethernet cable or Wi-Fi to link to your network hub.
  5. Use the router’s default gateway IP address in a web browser to gain access to the router’s configuration page.
  6. Use the username and password from the router to access its administration page.
  7. If there are any available firmware updates, you should go into the router’s settings and install them.
  8. Once you’ve made the necessary adjustments, save them and restart the router.
firmware huawei
Credit: Huawei

The LOS indicator should now stop blinking red.

Read: How to Fix the “2.4GHz Wi-Fi Not Working But 5GHz Works” Problem?

Final Words

The blinking red LOS indicator on your Huawei router indicates a loss of signal, the cause of which could be unpaid bills, maintenance issues, or malfunctioning hardware. Try the solutions mentioned in this article, and you should be ready. If the problem still persists, you may need to replace the router. Contact Huawei support and ask them to check for hardware defects in the router. If any hardware defects are found, get your router replaced.

Mehtab is a tech writer at DealNTech, where he covers PC and mobile-related guides and news. He is passionate about helping people understand and use technology to their advantage. In his role at DealNTech, Mehtab focuses on creating informative and engaging content on a variety of PC and mobile-related topics, including Windows, CPU, GPU, and Android. Email: [email protected]. Follow him on X(Twitter)

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