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Motorola SB5100 SURFboard DOCSIS 2.0 Cable Modem
Problem for Motorola SB5100 SURFboard DOCSIS 2.0 Cable Modem...

Modem disconnects on a daily basis




By mikejc1027 on Feb 23, 2009

" "
Every day, around 3-3:30 P.M. to about 4 P.M., my modem disconnects and drops the signal. Repeated power-cycling does not work, what could be the problem? I've had many altercations in the past with my ISP (Comcast) about this issue before and it was resolved for some time, until recently. In the past, I had a faulty modem, and my cabling was bad.

Same Problem

Apr 17, 2009

-   everyday the cable modem (surf board) drops in the afternoon.
the modem fails to reaquire the internet after
i upgraded my cable service to include a motorola dvr
dct 6416 lll. i have to unplug and plug back in the modem
before it will connect to the internet

if i want to keep my internet up i have to unplug the power to my dvr
then the cable modem will not drop the internet

-   DeadmanWOS

Best Solution

posted on May 08, 2009
Very Helpful)

Jazzman_ATL

Rank: Wiz 
Rating: 82%, 24 votes
Type in 192.168.100.1 into your web browser, that should bring you into the modem, check on what your dB levels are.. Cut and paste your output in case this happens again. Your modem will have a log of the disconnects that you can use when talking to Comcast. It sounds like you might have a pwr problem with your dvr. Are they plugged into the same outlet? Are you able to contact Comcast while it is happening? As a workaround, try plugging each into a different outlet. I would open up a trouble ticket with Comcast and have them escalate the problem. If it is a comcast modem, they can bring you another one out.
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Solution #2

posted on May 25, 2009
Not Rated)

mattballew

Rank: Wiz 
Rating: 84%, 60 votes
Its likely that the node you are connected to is simply overloaded. And a million people are getting online at that time, and Comcast just cant support everyone... For this there is no fix, Unless you switch to another ISP
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