Arris SURFboard S33 Lights: Meaning And How To Troubleshoot

Do you know what the lights on your Arris S33 SURFboard modem mean?

In this article, we are going to explain the Arris S33 lights meaning and guide you through troubleshooting any issues. The Arris S33 modem informs us about its status through various light signals.

What Do The Arris S33 Light Colors Mean?

Now, let’s find out what these lights mean, and if any of them indicates an issue with your connection, how to fix potential issues.

Arris S33 Modem Light Off

Arris S33 no light

If your Arris S33 modem light is off, it can indicate that the modem is not receiving power or is turned off.

Tip: Make sure that the modem is properly plugged into a power source and the outlet is functional. If the modem still does not power on, check for any issues with the power cable or consider contacting technical support for further assistance.

Arris S33 Solid Orange Light

Your modem is powered on. This is a normal status indicator showing that the device is working.

Tip: No action is needed unless the light remains amber and there is no internet.

Arris S33 Flashing Orange Light

The flashing orange light on Arris S33 means that a firmware update is running in the background. This blinking orange light indicates that your modem is downloading and installing necessary updates.

Tip: Do not turn off the modem during this process. The firmware upgrade process shouldn’t be interrupted. Just give the modem some time to complete the process.

Arris S33 Blinking Green Light

The blinking green light on the Arris S33 modem means that it is searching for downstream and upstream channels. This is part of the connection process.

Tip: If the green light blinks for an extended period, it could indicate a connection issue. The first thing to do here is to check the cables and connections. After that, you can restart the modem and check whether there is an outage in your area.

Arris S33 Solid Green Light

The solid green light on Arris S33 means that the online status is in DOCSIS 3.0 mode. This indicates a successful internet connection using DOCSIS 3.0 technology.

Tip: Generally, no action is needed. If internet issues arise, a modem reset might be necessary.

Arris S33 Solid Blue Light

Arris S33 blue light

The solid blue light on Arris S33 means that the online status in DOCSIS 3.1 mode. Your modem is connected to the internet using the latest DOCSIS technology.

Tip: Similar to the solid green light, no action is typically required. If you experience connectivity issues, consider restarting the modem.

Arris S33 Blue And Green

The flashing blue and green light indicates anError mode. This combination signals that there is a significant issue with your modem.

Tip: Restart your modem. If the problem persists, check for any service outages or contact your ISP or Arris support for assistance.

Arris SURFboard S33 Troubleshooting

If you are having trouble with your Arris S33 modem, here is a list of basic troubleshooting steps you can follow. These steps are designed to be simple and easy to understand.

Restart Your Modem

Often, many issues can be fixed just by restarting your modem. To do this, unplug your modem from the power source, wait for about 1-3 minutes, and then plug it back in. Wait for the modem to restart completely and all the lights to stabilize.

Check The Cables

Make sure that all the cables connected to your modem are connected firmly and properly. This includes the power cable, the coaxial cable (from your modem to the wall outlet), and any Ethernet cables. A loose cable can cause connection issues.

Check For Outages

Sometimes the issue might be with your Internet Service Provider (ISP) and not your modem. Check if there is a service outage in your area. You can usually find this information on your ISP’s website or by calling their customer service.

Connect Directly With Ethernet

If you are having trouble with Wi-Fi, try connecting a device directly to your modem using an Ethernet cable. If the connection improves, the problem might be with your Wi-Fi signal and not the modem.

Update The Modem Firmware

Check if your modem has the latest firmware. Sometimes, updating the firmware can resolve issues. This is typically done automatically, but you can check the manufacturer’s website for information on how to manually update.

Reduce Network Congestion

If your internet is slow, try disconnecting some devices from your network. Too many devices using the network at once can slow down your internet speed.

Reset The Modem To Factory Settings

If nothing else works, try resetting your modem to its factory settings. This will erase any custom settings, so be prepared to set up your network again. The factory reset process can last from five to thirty minutes.

There is usually a small reset button on the modem; press and hold it for about 10 seconds or until the front panel LED lights start flashing.

Contact Support

If resetting the modem to factory defaults doesn’t fix the issue, it is time to contact Arris customer support or your ISP. They can provide guidance that is more specific, and identify and fix the issue.

Frequently Asked Questions

How do you turn off the lights on an Arris S33?

Typically, modems like the Arris S33 do not have a feature to turn off the lights without powering down the device. The lights are an essential indicator of the modem’s operational status. If the LED light on your Arris S33 bothers you, consider placing the modem in a less intrusive location.

How do I activate my Arris S33?

To activate your Arris S33, connect it to your cable outlet and power source. Then, connect it to your computer or router using an Ethernet cable. Finally, follow your ISP activation process, which usually involves logging into an activation portal or calling customer service.

What to do if Arris S33 keeps disconnecting?

To troubleshoot frequent disconnections, power cycle it, check cable signal levels in its Web Manager, contact your ISP for activation issues, inspect cables and environmental factors, update firmware, and seek technical support if problems persist.


Understanding the Arris S33 lights is the first step toward troubleshooting potential networking issues. By recognizing what each light color means, you can take the necessary steps to make sure your modem functions optimally.

Take Action:

  • Try Troubleshooting: Use the guidelines above to address any light-related issues. Often, a simple reset can resolve the problem.
  • Contact Support: If issues persist or you are unsure, don’t hesitate to contact Arris or your ISP support. They are trained to help you resolve any modem-related problems.