Cable Modem Troubleshooting: Motorola SB5100

by Ross McKillop on July 4, 2006

Cable Modems

Light patterns, images, manuals and more helpful info for the Motorola SB5100 cable modem -

Manufacturer: Motorola Model: SB5100
Modem Light Indicators
Power

Flashing - Startup diagnostics in progress.
On - Cable modem is powered on.

Receive

Flashing - Scanning for a downstream channel.

On - Downstream channel is connected.

Send Flashing - Scanning for an upstream channel.
On - Upstream channel is connected.
Online

Flashing - Scanning for a network connection.
On - Startup process complete. Modem aqcuired.

Activity

Flashing or On - Transmitting or receiving data.

Standby

This light turns on when the standby button is pressed and standby
mode is activated. If this light is on, all other lights will be off.

Notes and Useful Information:

Installation and User Manual
(Requires Adobe Acrobat)

Motorola Product Website

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    { 1 trackback }

    Simplehelp » Cable Modem Index
    07.17.06 at 11:22 pm

    { 18 comments… read them below or add one }

    1 Ana G 03.01.07 at 1:51 am

    Hi, my modem is motorola SB5100 cable modem, I can’t connect to internet, lights not on, only power and receiver flashing, I try to install modem again but still nothing happening.

    2 Ana G 03.01.07 at 1:51 am

    Hi, my modem is motorola SB5100 cable modem, I can’t connect to internet, lights not on, only power and receiver flashing, I try to install modem again but still nothing happening.

    3 Ash 03.06.07 at 2:45 pm

    hello just woundering i have got that modem and when i go to install it , its checks all my connections and says it can not detect an ethernet card and i do not no what it is going on about could you please help me thanks .

    ashleyansine@hotmail.com

    4 lalo 04.13.07 at 3:37 pm

    i have a very important question what is the ssid of motorola sb5100 its killing me i need it to conect mi wii to internet

    pleae respond

    5 Ben 05.22.07 at 5:50 am

    I’m currently using my motorola sb5100 on my PC using windows XP, I’ve just bought a MAcbook pro and I can’t seem to install the modem onto it. Is it even compatable with MAC OS X?

    6 Ben 05.22.07 at 5:51 am

    I’m currently using my motorola sb5100 on my PC using windows XP, I’ve just bought a MAcbook pro and I can’t seem to install the modem onto it. Is it even compatable with MAC OS X? and if so, how can I get it working?

    7 Marcus 06.24.07 at 2:37 pm

    Perhaps a bit late, but for Ben: You need to unplug the power on the modem for about 10 seconds to make it work with a new computer unless you’re using a router

    8 zeeshan hussain 07.31.07 at 2:49 am

    Hi I got a very important question to ask, I got a motrola sb5100 cable modem currently using it on USB but I recently decided to change it, put an ethernet cable on because I need to, to be able to connect it to my router, everytime I try to install blueyonder driver it just says usb cable not found it can work with any but I did everything still it says, but about 4 years ago it worked with ethernet now I desperately need help from a professional please can you get back to me thank you, this is really urgent
    Yours sincerily
    zeeshan hussain.

    9 mike kloongian 08.16.07 at 9:15 am

    Hello-
    I have the SB5100 -when I restarted,only power led on and the “send” led is flashing.No other led’s on.Will not respond to restart.Any suggestions?? Thanks!

    10 Evelyn 09.21.07 at 5:14 am

    I have the same question as #2 & 3, where can I find the answer?

    11 doug 10.02.07 at 6:58 am

    evelyn what you should do is unplug the modem from the wall wait 30 seconds then plug it back in. that should help with your problem and if it does call you local internet provider.

    12 doug 10.02.07 at 6:58 am

    I mean if it dosent help.

    13 aaron webb 10.13.07 at 7:43 pm

    Im a Canadian user whose ISP issues these modems out with the service. I went ahead and bought a modem off ebay so I wouldnt have to keep renting it from my ISP but the American made modem won’t work on my PC with my ISP. Any ideas? Is it possible there is a lock of some type that prevents this modem from being used outside of the USA?

    14 wendy 09.09.08 at 12:29 am

    je n’arrive pas à trouver le SSID pour configurer ma ds , j’utilise le connecteur wifi usb nintendo et j’ai un modem motorola SBV5121E, pouvez-vous m’aider

    15 Guilherme 12.29.08 at 4:10 pm

    Oiii eu tenhu um moudem SB5100 mas esta blokeado, teria como eu desblokear o sinal dele, como ? i teria como eu usar o moudem sem o ligar o cabo coax?
    Eu qeria saber se esse moudem ainda presta i tem como uzar, ou pode ir para o lixo.Vlw!

    16 Kevin 04.18.09 at 1:18 pm

    Hello, i have an issue with this model, it seems that when i turn on the modem this loads the lights normaly, but after 3 flashes of the ‘PC\ACTIVITY’ light, only the Power light is on and the RECIVE and SEND lights start flashing both at same time, i dont recive any kind of signal from the router, i had it off for 4 days thinking may be overheating, do you know a solution or any kind of help that may solve my issue?

    17 Hans Malik 04.18.09 at 6:40 pm

    Hi, I have a question about this SB5100. Can I connect 2 computer to internet at the same time using both of the connection (USB & ethernet)? I tried before but only 1 computer that can connect to the internet. The manual said that I can do it, does it need any other settings?

    18 Kevin 04.22.09 at 8:27 pm

    For you Hans Malik, maybe it means you to have a router in order to conect more than 1 pc with the modem, i try as well but everyone told me that it can only hold 1 IP so i had to buy a router for more computers in a network, i assume you have to buy one.

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