Question about Siemens SpeedStream Modem (4100) (SS4100)

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The modem is not switching on.

Taking longer and longer every time I turn it on.

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Sound like the power suppy is on its way out.
check the fan on the power suppy if there is one.
if not, place you hand on the modem, and see if it gets hot.
if it is, then you need to provide some type of cooling.
and that donesn't help, then is time to get a new one.

Posted on Nov 10, 2008

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Hangs after a short time

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My cable modem will no longer power on, any advice?

Try plugging it in another power outlet. If it still does not turn on, try another power adapter with same voltage and polarity.

If it still doesn't turn on, I'm afraid it's the modem who's dead and will need replacement.

Apr 26, 2011 | Arris SURFboard SB5101 Cable Modem

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Hi, my modems ON&OFF button wont turn it on sometimes.I was wondering if there was something i could do to fix that.

better open the modem and short circuit pins for power switch...
so that you modem will stay ON all the time...and if you want to turn OFF the modem you can cut off the power supply to the modem....

Feb 03, 2011 | Siemens SpeedStream Modem (4100) (SS4100)

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Need instructions on surfboard SBG901 and if need special phone line cord . Have cable now but am switching to AT&T and can't find box with cable and instructions

If you have a CABLE modem now and since your going to AT&T (DSL) you will need a new DSL modem for that connection.

If you've signed up for AT&T DSL service, the company will probably give you a modem for free. Taking the free modem will be the best choice for most home users.

Thanks for choosing FixYa, If you find this helpful please vote and comment.

Oct 13, 2010 | Motorola Modems

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The on off switch no longer works.

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Jan 26, 2010 | Siemens SpeedStream Modem (4100) (SS4100)

2 Answers

The on-off switch on Speedstream 5100 modem keeps turning itself off, every few hours for few days. Finally modem has no power, what could the problem be? already tried replacing the power cord but still...

1: unplug all the cords to the modem
2: press the reset button from the back of it
3: leave it for about 5 minutes to drain off the static charge
4: plug it only to power source to see if the power lights up
5: if does'nt don't waste your time on it, its bad and if it was provided to you by your internet service provider get it replaced for free.
6: if you bought it yourself check for warranty generally modems have lifetime warranty

Dec 12, 2009 | Efficient Networks SpeedStream 5100 Modem

1 Answer

Westall modem taking 5 min to connect to internet to (AT&T DSL)

its your connection which is the problem plz try complaining on help line of you connection

Aug 27, 2009 | AT&T High Speed DSL Modem

6 Answers

Internet Light keeps blinking - all others are out - No internet


Blinking green internet light is normal BUT you must check if theres any dsl outage in your area..You can contact your ISP for that.

But then maybe you can try this:

Turn your PC off > then you modem or router.. after 60 secs turn your modem or router ON first then your PC and check if you can go online.

If you called your internet service provider {ISP} and no reported outage let me know and we'l solution for that.

Keep me posted.



2 Answers

Turning Speedstream 4100 Modem (ON and OFF)

First thing is all electronics items are made up of ICs, registors and capacitors. What will happen if you strecth and release a rubber band 100 times in 5 minutes?. it may break or will break very soon. on the other hand what will happen if you strecth another rubber band and leave it strecthd for 5 minutes?. no change will be there in the rubbers tensility. So is the case with every electronic items. when they heat they expand and when they cool they shrink to original. so if you swith on and off your modem the components will expand a little with heat and when u switch off modem the components will come to original position. if this process is repeated daily twice or thrice then i dont think that your modem may be working fine till next year. so let it on for the whole day and switch it off only when u sleep at night if required., thanks.

Aug 16, 2007 | Siemens SpeedStream Modem (4100) (SS4100)

1 Answer


HI, It is absolutely not necessary to keep a dsl modem plugged in if you are not using your internet. It is good to plug out the power adapter when not using it to have a longer life. I have one at home and when I leave it on for a couple of days plugged in, I would have to unplug it for a few minutes and then plug it back in or I wouldn't be able to connect to internet.

Jun 08, 2007 | Siemens SpeedStream Modem (4100) (SS4100)

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