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

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Im having problems getting my modem to get online. The light wont come on.

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Re: Im having problems getting my modem to get online....

What light does not come on? There is the power light and several other lights. Is there also an on/off switch on the modem itself?

Posted on Mar 20, 2007

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I have a similar modem, my online light ( orange) blinks all the time, it is supposed to when you are online.
Have you checked your cable input, is it screwed in tight, how about where it attaches to the wall connector.
Unplug your power lead to reboot the modem.
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Is automatically detect setting ticked, if not tick it.
Is use proxy ticked, it should not be usually.
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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.

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Im having problems getting my modem to get online. The light wont come on. All but the online light come on. The online light blinks then all the lights go off except the power light, and the receive...

Your modem is not synching. It could be a number of possibilities, and you're going to have to do some troubleshooting to narrow it down.
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  • Verify that your modem is not in "standby" mode
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  • Call your ISP to make sure your modem is provisioned and your service is set up for cable internet.

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