jal's profile

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Problem with SB6141 modem

I just upgraded from an older Motorola modem DOCSIS 2.0 to the Motorola SB6141 which supports DOCSIS 3.0. Ever since I plugged in and activated this modem, my connection has periodically dropped.  The old modem I had almost never had a problem and I am using the same router - Linksys Cisco E1200.  I have tried resetting the modem and router and I switched out the power supply to see if that was the problem but I still have the same issue. Does anyone have any idea how to remedy my problem.

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Based on the logs there, it looks like the modem is having power resets or failures every 3 hours or so. Are  you having to reset it that often or is it cycling / shutting down on its own when it occurs?
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Hi Edward,

It is cycling/ shutting down on its own. It happens even when I'm not home and computer is not on.

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jal said:
It is cycling/ shutting down on its own. It happens even when I'm not home and computer is not on

Is the modem plugged into a surge protector? Also, if you feel the power brick/supply of the modem, does it feel warm?

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I've had the modem for about a week.  Modem is plugged into a surge protector.  The power supply is not warm. I've tried switching out the power supply already and still had the same problem. I will probably try to return it

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What kind of surge protector? Anything else big plugged into it like a PC or TV? Most surge protectors don't have isolated sockets, so a strong draw on one outlet can effect the power going to the other outlets, sometimes even if just for a micro second. Like flushing the toilet and having the water drop at the shower. This become mores common and prevalent as the surge protector gets older. Might want to try a direct connection to the electrical socket first before replacing the modem, in-case its that.

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I tried a direct connection after reading your post and looking at the log overnight, the modem is still resetting.  I think I will just have to return the modem at this point.  Thanks for the help.

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