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stevehifi2003's avatar
stevehifi2003
New Contributor
5 years ago

new Arris sb8200 - issues with downstream (no blue light) with gigablast

Hi There, Wondering if you can help me, I just got an Arris SB8200 modem today and ordered Gigablast service.  My lights are all green (no blue at all). I am in orange county, california (92630)....
stevehifi2003's avatar
stevehifi2003
New Contributor

Yes nothing obvious wrong with the modem when I go to the status screen. Am I supposed to see a blue light on the modem or not? I've hit speeds up to 700Mbps (almost at 940), does this mean I'm still in docsis 3.0 mode or not?

BrianM's avatar
BrianM
Moderator
5 years ago
The light should turn blue to indicate that the OFDM channel is connected and that the modem is running in 3.1 mode. I just checked your modem and it doesn't look to be connecting to that channel currently, this is likely a signal issue. Some of your downstream channels are a bit low and some of the upstream channels are a bit higher than normal. Make sure everything is connected securely and bypass any possible splitters. If you still don't see it turn blue afterwards we will likely need a technician out to investigate.

Brian
Cox Support Forum Moderator
  • stevehifi2003's avatar
    stevehifi2003
    New Contributor
    5 years ago

    Great technical feedback - thank you. Everything is connected securely inside the house. When I go to the main panel outside where the main cable feed comes in, there are two connectors (one is a simple 1 to 1 connector and the other is a 5-1002MHz splitter which looks like low quality). This splits the main signal to two lines coming inside the house - one of which I connect directly to the modem.

    Is it possible that there is a problem with the outside 1 to 1 connector and/or splitter? I can order a new splitter if necessary (amazon sells 5MHz to 2300MHz). 

    • BrianM's avatar
      BrianM
      Moderator
      5 years ago
      It's very possible and that could be a cheap fix if that turns out to be the issue.

      Brian
      Cox Support Forum Moderator