Question about Arris SURFboard SB4200 Modem

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Modemwon't connect The Power light is on, the Activity light is on, but Recieve and Send lights are blinking alternatley and the Online light is off. Does anyone know whats wrong and what I can do to fix this? I can't access the internet through any medium at my disposal.

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Try restarting the modem several times. If that doesn't work, try leaving it plugged out for about 20 minutes and then plug in and try again. If all this doesn't work, you need to call the cable company and get them to resolve this.

Posted on Mar 17, 2007


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My motorola SURFboard SB5101 has a on power light, a blinking recieve light, and an on PC/Activity light, with the other lights off. what is wrong with it?

The light pattern you have described indicates that the modem can not establish a connection to your internet service provider (ISP). This is typically do to a signal related issue. To trouble shoot the problem you will need to connect the modem directly to the main cable line where it first enters into the home. You will know when the modem establishes a connection by the top 4 lights becoming green. If at any point all 4 top green lights start to blink in sequence than you will need to contact your internet service provider to "unwall the modem". Remember most internet service providers require you to register your modem on there network. So if you have not all ready completed that process you will most likely not have access.

I hope that information above has helped is some way.
If possible please rate this solution.

Sep 01, 2010 | Arris SURFboard SB5101 Cable Modem

1 Answer

I have the sbg900. It suddenly quit working. I get the green power light and orange wireless light. The recieve light blinks slowly. The send, online, and activity lights do not light at all. The wireless...

Best to call up the cable company and go thru the phone may just find that they're having trouble in your area...
They can also send a reset signal to your modem too.
Give em a call..

Jun 07, 2009 | Arris SURFboard SBG900 (49402201900) Modem

1 Answer

Modem Connected, No Internet

change the dns to
and checked if u getting the default gateway and if u r able to open the routers page in the ie.
if this does not resolve the issue for further assistance how did this happen
whos ur isp , do u have ur isp's settings as every isp have their unique settings which must be entered.

Jun 04, 2009 | Arris SB5100 SURFboard DOCSIS 2.0 Cable...

1 Answer

The power light and PC activity light are the only lights that come on. Send/Receive lights don't blink.

the most easy way to connect to the internet is get a bluetooth connetion (zippys) press the tools find device on the bluetooth on ur phone press pair device and press dial up inthe username put ur mobile number and password mobile number dial up number *99# dial

Apr 28, 2009 | Arris SURFboard SB5120 Modem

1 Answer

Recieve and Send lights blinking

Are you unable to connect? The send and rcv lights should be blinking. Make sure that your link light is on and not blinking. Your link light is your connection to your ISP

Feb 17, 2009 | Arris SB5100 SURFboard DOCSIS 2.0 Cable...

1 Answer

Constantly blinking Activity light

Well, you are very correct with the activity light blinking and the increased blinking except the fact that modem will encounter a problem in future...
The 5 different lights on your modem namely Power, Ethernet, DSL, Internet and Activity have their own indications and explanations.
1. The Activity Light indicates the amount of activity that is takin place on the computer on the Internet though the activity might blink even when you are not browsing. This can be explained by stating that the computer constantly keep sending signals  about it being connected to the internet and any other acknowledgements..

So, you've got nothing worry about unless the Power or the Ethernet or the DSL or the Internet light Blinks....
Cause they are the resultants of a fried modem(check for the adapter), faulty LAN connections, interrupted Dsl line and the account verification failure indications respectively.....

Dec 18, 2008 | Siemens SpeedStream Modem (4100) (SS4100)

1 Answer

Receive activity and send lights are blinking. power light is on. and online is off

try to unplug it and the cable for a few minutes, then replug it and see if that helps.

Jul 27, 2008 | Arris SURFboard SB4200 Modem

1 Answer

Receive, send, and activity lights are all blinking but online light is off

Power Cycle the modem if the 4 lights do not go solid you would want to contact your cable provider to ensure signal is being received properly to modem.

Jul 27, 2008 | Arris SURFboard SB4200 Modem

1 Answer

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.
  • Verify that your AC, Cat 5, & ethernet cables are connected securly
  • Verify that your modem is not in "standby" mode
  • Power cycle your modem
  • Try a different cable outlet
  • Call your ISP to make sure your modem is provisioned and your service is set up for cable internet.

Nov 06, 2007 | Arris SURFboard SB5120 Modem

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