S33 - Modem with high pitch noise

  • 16 June 2024
  • 1 reply


The modem was unplugged due to loud hissing noises, it was working fine. Unplugged s33 for 15 mins to let cool down and when I went to plug it in it never booted. Orange light for 10-15 secs than flashes to white for a sec back to orange light for 10-15 secs. Never connects don't see it on Xfinity side and I'm unable to get into web portal either. This product is under warranty would like a replacement I've gone through hours of troubleshooting.


Best answer by SURFboard Moderator 18 June 2024, 02:31

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We are very sorry for the inconvenience caused. Please do reach out to for further assistance.