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

2 Answers

DISCONNECT EVERYTIME can someone help my Motorola surfboard keeps disconnecting and i dont no y every time use the internet it works fine for 5 - 20 mins then disconnects. All the lights go off and it like resets the whole modem and i get disconnected. im sure the cables and everything are hooked up and IT STILL DOES THIS its really ticking me off . CAN SOMEONE PLZ HELP i have also heard that this model (sb5101) usually does this. should i buy a new modem or is there a way to fix it

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  • PR0BLEM Jun 07, 2008

    ty very much u were a big help

  • caustin918 Jun 22, 2008

    Modem is on and is connected to internet but computer will not stay connected to internet for more then a few minutes

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2 Answers

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  • 142 Answers

Modems firmware needs to be updated
or
Electrical interference is causing all the trouble
Make sure there is no interfernce in the surrounding

Posted on Jun 07, 2008

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  • 76 Answers

Try the other connection from modem to your PC

Posted on Jun 18, 2008

  • Ooq  Affiat
    Ooq Affiat Jun 27, 2008

    I've same problem, but since I try to replace my PC Lan Card with the new one, my internet connection working normally.

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I cannot sign onto my motorola surfboard router site, no user names or passwords work. please help. my other laptop connects to wifi network fiine, but other one keeps asking for pin or security...


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Online light blinkin in motorola sb4200


1- Disconnect the power at the back of the modem.
2- Disconnect the internet cable at the back of the modem (the cable from the wall to the modem).
3- Wait at least 2 minutes.
4- Connect the internet cable back.
5- Connect the power cable back.
6- The lights on the front of the modem should start turning on one at a time; the top one first, the second one next...

If the on-line light still blinks, you might want to repeat the steps above after shutting down your computer. Turn on your computer if the on line light is OK (not blinking).

If all fails, call your internet service provider (ISP) to see if the service itself is down for maintenance, or if there is a problem with high-speed internet in your area.

If you have a router, you might want to power it off before trying the steps above. Turn it back on when the on line light is OK.

Usually, I call my neighbor who has the same ISP to see if their internet is down, before I call the ISP company.

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hi, to reset the modem follow these steps.

step 1 : Turn the Motorola Surfboard SB5120 Cable Modem so that the back of it is accessible to you. There's no need to disconnect any of the cables.

step 2 : Find the "Reset" button on the modem. It's a small recessed button located between the USB port and the cable outlet.

step 3: Use a pointed instrument to push the button. Hold it for 10 to15 seconds to allow time for the modem's indicator lights to go off.

step 4 : Release the Reset button. The lights will gradually begin to come on as the modem connects to the communications channels between the cable provider, the computer and the Internet provider. When all the connections are made, the lights will stablize.

step 5 : Release the Reset button. The lights will gradually begin to come on as the modem connects to the communications channels between the cable provider, the computer and the Internet provider. When all the connections are made, the lights will stablize.

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Throw it away or send it to Motorola they get very HOT and this causes failure its common in routers and modems

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2 Answers

SB5101 Motorola Modem Disconnects Randomly


If all the lights go out I would assume you mean the power light as well. Couple of things I would look at:

Has your ISP replaced the modem including the power adapter?
Has your ISP verified there is no short on the incoming data cable? You could try to wiggle the incoming data cable to see if the lights go out. I would do the same on the power cable.

If it's not a mechanical fault (cables), verify that you have the correct and current drivers for your modem and operating system.

Good luck and thanks for using FixYa.

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* If you can connect after disconnecting power and reconnecting, it means there is formation of static charge on modem

* Check whether there is any cordless phone or any other satellite devices next to the modem. If so, move the modem 10 feet away.

* If your modem is placed on carpet, please place it on wooden desk

If this doesnt work, please dont rate me down, if it works, please rate me as fixya!!! lol...

Have a nice day!!!

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Motorola SURFboard SB4200 With Buffalo Airstation


If it were me, i would return the airstation. then i would buy a linksys WRT54G. They are about 50 dollars. Then use that to set up your wireless network and you will find it quite easy.

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