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SBG8300 stuck in a bootup loop on the internet LED.

  • January 23, 2025
  • 6 replies
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  • The Many
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I have recently started having issues from my recently purchased ARRIS SBG8300 Cable Modem. When I had it set up with my ISP, it performed fantastic; Stable, reliable speeds, with little to no issues, all the sort, however, suddenly, when I went to bed, after about a week of it working perfectly, it all stopped working. Looking at the app and IP address, nothing seems out of the ordinary, apart from my Power Level for my Upstream being a few units below the specs specified on the website and the WAN saying “No Internet”. I’ve tried all the usual troubleshoots: Power cycling multiple times, factory resetting multiple times, checking the coax, having a technician look at it all and check the lines on another modem, and everything seemed fine. The only apparent issue I can see on the router is that, while the WiFi light is static green while connected, the internet light keeps going through the blue Downstream and Upstream indicators, blinking green for a little bit, and doing it all over again. I can still communicate to it via the app and IP address, like changing the names and passwords of the WiFi, but I just have no internet. Any help will be appreciated, I’m at a loss for what to do.

Best answer by plemans

I’ve had to rent a modem to prove it wasn’t my modem. And I’ve also seen it be the modem. You might need to either check with another modem or rent one to see if it works if the ISP isn’t willing to recheck the line. 

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6 replies

plemans
Juggernaut
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  • Juggernaut
  • 2214 replies
  • January 23, 2025

got a copy of the cable connections page that shows the upstream/downstream and issues? 

 


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  • Author
  • The Many
  • 3 replies
  • January 23, 2025
plemans wrote:

got a copy of the cable connections page that shows the upstream/downstream and issues? 

 

Not sure if this is exactly what you’re wanting but, I found this under the Gateway > Connections > WAN page. If this isn’t what you’re looking for, could you help direct me to the right place? Still trying to figure stuff out, haha. https://ibb.co/m5V9TZ8


plemans
Juggernaut
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  • Juggernaut
  • 2214 replies
  • January 23, 2025

that is but usually its more than a single channel upstream and downstream. If only 1 channels connecting, it usually means its not provisioned in the ISP’s system. I’d call them back and see if they can reprovision it


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  • Author
  • The Many
  • 3 replies
  • January 23, 2025
plemans wrote:

that is but usually its more than a single channel upstream and downstream. If only 1 channels connecting, it usually means its not provisioned in the ISP’s system. I’d call them back and see if they can reprovision it

They just keep saying they can’t do anything about it (which I feel is complete rubbish). Not sure what to do since they aren’t willing to cooperate 


plemans
Juggernaut
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  • Juggernaut
  • 2214 replies
  • Answer
  • January 24, 2025

I’ve had to rent a modem to prove it wasn’t my modem. And I’ve also seen it be the modem. You might need to either check with another modem or rent one to see if it works if the ISP isn’t willing to recheck the line. 


Forum|alt.badge.img
  • Author
  • The Many
  • 3 replies
  • January 24, 2025
plemans wrote:

I’ve had to rent a modem to prove it wasn’t my modem. And I’ve also seen it be the modem. You might need to either check with another modem or rent one to see if it works if the ISP isn’t willing to recheck the line. 

That’s similar to what I’ve been thinking of doing as  well. Thinking of grabbing myself a new one, returning this one, and seeing if I still have issues. Thanks for helping me out!


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