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View Full Version : Motorola SB5100 cable modem - is it really dead?



skarkada@gmail.com
09-30-08, 12:43 PM
I have been using this cable modem for about a year now. We lost our
Internet access last Friday. This is our own modem (not rented from
Comcast).

There is a light at the front of the device labeled "Online" which is
currently staying off. According to the manual, that means "IP
registration is unsuccessful."

Called Comcast twice (different reps) and both the times they said
that they are not able to access (see) the modem and that the device
has failed. My options are either to buy a new modem or rent one from
them at $3 per month.

Power, Receive, and Send lights are on. Is there any way to ensure
that the modem has really failed (without relying on what Comcast
people are saying)?

Thank you very much for your time.

Todd H.
09-30-08, 02:13 PM
skarkada@gmail.com writes:

> I have been using this cable modem for about a year now. We lost our
> Internet access last Friday. This is our own modem (not rented from
> Comcast).
>
> There is a light at the front of the device labeled "Online" which is
> currently staying off. According to the manual, that means "IP
> registration is unsuccessful."
>
> Called Comcast twice (different reps) and both the times they said
> that they are not able to access (see) the modem and that the device
> has failed. My options are either to buy a new modem or rent one from
> them at $3 per month.
>
> Power, Receive, and Send lights are on. Is there any way to ensure
> that the modem has really failed (without relying on what Comcast
> people are saying)?
>
> Thank you very much for your time.

This is why I lease modems. Either way, it's their friggin problem.
No fingerpointing.

If online doesn't light, there's something keeping it from talking
with the head end. The ultimate reason may or may not be the modem.
If you own your modem, you'd be rolling the dice to have them come out
onsite and check the connection. If the issue ends up being your
modem, then you're out a truck roll charge. If it is their
connection, there's no charge, but you're out some heartache.

That $3 lease fee starts looking pretty insignificant before long.
Think of it as "enhanced service and peace of mind fee so if ****
don't work, their truck is coming to your house to find out why.

That said, if you have a neighbor with the same service, ask to
borrow their cable modem for 15 minutes. That should tell you if it's
wiring of the modem.

--
Todd H.
http://www.toddh.net/

YARDofSTUF
09-30-08, 06:24 PM
Leave it unplugged for a while if you havent, or hit and hold reset fro liek 30 secs and see if it connects, if not you'll probably have to have them come out.

1PW
09-30-08, 09:25 PM
On 09/30/2008 09:43 AM, skarkada@gmail.com sent:
> I have been using this cable modem for about a year now. We lost our
> Internet access last Friday. This is our own modem (not rented from
> Comcast).
>
> There is a light at the front of the device labeled "Online" which is
> currently staying off. According to the manual, that means "IP
> registration is unsuccessful."
>
> Called Comcast twice (different reps) and both the times they said
> that they are not able to access (see) the modem and that the device
> has failed. My options are either to buy a new modem or rent one from
> them at $3 per month.
>
> Power, Receive, and Send lights are on.

When you say they are on - are they always on solid or flashing? Do
any of the other lights flash in any manner. I suppose Comcast had
you remove power from the SB5100 for some period of time and then
power it up again? Visually, did anything change?

Is there any way to ensure
> that the modem has really failed (without relying on what Comcast
> people are saying)?
>
> Thank you very much for your time.

Do you know how, and have you logged into the SB5100, from your
computer, to see its diagnostics and logs? Is a small TV available and
can you try disconnecting the cable from the SB5100 and connecting to
the TV?

Please let us know.

Best wishes to you.
--
1PW

@?6A62?FEH9:DE=6o2@=]4@> [r4o7t]

Ken Whiton
10-01-08, 03:28 AM
*-* On Tue, 30 Sep 2008, at 18:25:12 -0700,
*-* In Article aLOdnaX3S5fnTH_VnZ2dnUVZ_uadnZ2d@comcast.com,
*-* 1PW wrote
*-* About Re: Motorola SB5100 cable modem - is it really dead?

Incidentally, are you aware that Comcast is dropping Usenet
service as of October 25?

> On 09/30/2008 09:43 AM, skarkada@gmail.com sent:
>> I have been using this cable modem for about a year now. We lost
>> our Internet access last Friday. This is our own modem (not rented
>> from Comcast).

>> There is a light at the front of the device labeled "Online" which
>> is currently staying off. According to the manual, that means "IP
>> registration is unsuccessful."

>> Called Comcast twice (different reps) and both the times they said
>> that they are not able to access (see) the modem and that the
>> device has failed. My options are either to buy a new modem or rent
>> one from them at $3 per month.

That modem comes with a two-year warranty, so if it has failed
contact Motorola for repair or replacement.

>> Power, Receive, and Send lights are on.

> When you say they are on - are they always on solid or flashing? Do
> any of the other lights flash in any manner. I suppose Comcast had
> you remove power from the SB5100 for some period of time and then
> power it up again? Visually, did anything change?

>> Is there any way to ensure
>> that the modem has really failed (without relying on what Comcast
>> people are saying)?

>> Thank you very much for your time.

> Do you know how, and have you logged into the SB5100, from your
> computer, to see its diagnostics and logs?

It uses the 192.168.100.1 IP address that is (more-or-less)
standard for cable modems.

> Is a small TV available
> and can you try disconnecting the cable from the SB5100 and
> connecting to the TV?

Ken Whiton

FIDO: 1:132/152
InterNet: kenwhiton@surfglobal.net.INVAL (remove the obvious to reply)

skarkada@gmail.com
10-01-08, 10:25 AM
I rented a cable modem from Comcast store. According to the lady at
the desk, all was already setup and I just had to replace my existing
modem with this rented one. I took it home, and replaced my current
modem. Still the same issue - no Internet access.

I called their support. This time, they did some elaborate tests,
pushed some files/data to the modem and eventually made it work. Now
we have Internet access via cable modem. However, my wireless router
isn't working now. I guess I'll have to change some settings (to
accommodate for the new modem).

I am still not sure if the old modem had really gone bad. I completely
agree with Todd H.'s approach and stick with Comcast's modem. I have a
free cable modem to give away for someone in Houston area with spare
time.

Thank you all for the time you have taken trying to resolve the modem
problem.