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Question

G34 wifi cable modem keeps losing connection

  • January 10, 2026
  • 3 replies
  • 83 views

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I recently installed a Surfboard G34 wifi cable modem and it is losing connection multiple times a day. Sometimes it reboots itself and regains connection. Sometimes if I unplug it, it will restart and reconnect but it’s happening multiple times a day. I went through troubleshooting with Xfinity and they couldn’t identify anything remotely. They can send a tech out but they’re not sure if it’s an issue on their side. I’m trying to see if I can troubleshoot the device before having a tech come out. Can anyone help?

3 replies

  • The Many
  • January 12, 2026

Im going through the same issue. Its literally garbage. And no chat support service on weekends. Im returning mine this week. People say to change the channel due to flooding over signal but even wired connection falls


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I recently installed a Surfboard G34 wifi cable modem and it is losing connection multiple times a day. Sometimes it reboots itself and regains connection. Sometimes if I unplug it, it will restart and reconnect but it’s happening multiple times a day. I went through troubleshooting with Xfinity and they couldn’t identify anything remotely. They can send a tech out but they’re not sure if it’s an issue on their side. I’m trying to see if I can troubleshoot the device before having a tech come out. Can anyone help?

Are the internet drops and the speed drops happening only over Wi-Fi as well?

If the issue occurs on both Wi-Fi and wired connections, we recommend checking the cable signal levels within the gateway. If the signal levels are out of the acceptable range, they can lead to the kind of connectivity issues you're experiencing.

When the signal levels are within the recommended range, your modem can maintain a stable, high-quality connection to the internet

Please refer to the link below for instructions on how to check your cable signal levels:

https://arris.my.salesforce-sites.com/consumers/articles/knowledge/G34-G36-Cable-Signal-Levels

The cable signal levels displayed on the interface page reflect the signals being transmitted by your Internet Service Provider (ISP).

If you notice that these signal levels are outside the recommended range, we suggest contacting your ISP to have them reviewed and adjusted accordingly.

While ISPs may have their own approved signal ranges, for this gateway to function properly, the signal levels must align with the acceptable values outlined in the reference article provided.


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Im going through the same issue. Its literally garbage. And no chat support service on weekends. Im returning mine this week. People say to change the channel due to flooding over signal but even wired connection falls

We apologize for the inconvenience. Could you please confirm your product’s model number so we can provide you with accurate and precise information?