Question about Arris SB5100 SURFboard DOCSIS 2.0 Cable Modem (50120900100)

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Only 3 Lights Come on, Not online though.

Hello. On my Motorola Surfboard, I can plug it into one wall outlet and I will have the send, receive, and power lights on, but not the online light. If i plug it into another outlet, all 4 lights come on. For space reasons i cannot use the other outlet to move things. So my question is how or why is the cable outlet I need not allowing my modem to connect online? I changed the wall plate recently also, and the same outlet works with TV signal. Before you ask, yes I have a splitter and i already tested that. Thank you for your help.

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Re: Only 3 Lights Come on, Not online though.

That online light goes solid when your ISP completes the registration process of your modem. If this process fails, there are only 2 possible reasons. The first is your modem MAC address is not on your account with your ISP, which cannot be your case because it works on a different outlet. The second reason would be what is called ingress on the outlet. Ingress is caused by a bad outlet or more frequently a bad connector. Make sure inside your connector is clean and free of metal shavings. The problem you are describing is actually rare because usually if your having cable issues that cause a registration problem, you don't usually get a send light.

By the way, just because your tv works on that outlet doesn't mean your modem will. Your modem runs off RF frequencies that your TV doesn't come close to.

Posted on Jan 21, 2008

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