What should I do if Internet connection on my TP-Link DSL modem is unstable?

Troubleshooting
Updated 04-29-2024 03:28:19 AM 39388
This Article Applies to: 

To figure out what causes the problem, it’s important to collect info when connection drops.

Note:

If your DSL modem router obtains the Internet through the WAN port, please refer to this FAQ.

If the following occurs, please refer to Case 3 to troubleshoot.

1. If you cannot test the wired connection, you will not be able to determine if the cable connection is stable.

2. When the problem occurs, if all wireless devices lose their Internet connection, while the Wi-Fi is still connected.

Case 1 The DSL LED goes off

Step 1

Contact your Internet Service Provider (ISP) to confirm that their connection is stable.

Step 2

Try using another DSL cable to connect the modem router to the DSL jack.

Step 3

Press and hold the Reset button on the modem router to reset it to factory settings and reconfigure it.

Note:

Before resetting the modem router, make sure you have Internet access credentials from your Internet service provider.

Step 4

If the above suggestions still cannot fix the problem, please contact support with the above results for further help and tell us how many devices you have and corresponding operating systems.

Case 2 The DSL LED is on, but the wireless connection is unstable

Step 1

Check whether the wireless connection will be automatically restored after a few minutes. Check the Wi-Fi LED on the router when it happens and see if the wireless network can be found via your end-devices.

Step 2

It’s probably caused by wireless interference. To change wireless channel, channel width (refer to here) or get away from wireless interference source, such as microwave oven, cordless phone, USB3.0 hard drive etc.

Step 3

Check firmware version of your router (here). Upgrade if it’s not the latest firmware. Contact our support if you don’t know how to upgrade.

Step 4

If the above suggestions still cannot fix the problem, please contact support with the above results for further help and tell us how many devices you have and corresponding operating systems.

Case 3 The DSL LED is on, but both the wired and wireless connections are unstable

Step 1

Contact your Internet Service Provider (ISP) to confirm that their connection is stable.

Step 2

Log in to the web management interface of the modem and get screenshot of DSL Status page and save system log.

How to log into the web-based interface of the AC VDSL/ADSL Modem Router

Note:

Please save the system log when the internet connection stops working. System log isn’t necessary if you have to log in to the interface by reset or restart the modem.

Step 3

Contact our support with the information above for further help and tell who your internet service provider is.

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