Question about Arris SURFboard SB4220 Modem

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Motorola SB4200E I have a 4200E that will not connect by ethernet.  It is definately the modem as I connect to another without any problems. Are there any known faults with the ethernet sockets or the soldering to the board going dry?

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  • DW190 Oct 09, 2008

    I dont think the USB would help as I want to flash the modem with new firmware and dont thik this can be done via USB


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I'm guessing that the unit is bad and may have taken a surge, if it's plugged into the wall directly, or a poorly grounded cable connection...things can happen...all my "stuff" is surge protected and or hooked up via UPS to keep the power clean. I have heard of no issues with this product...but it's not unheard of. cold solder joints usually show up right away for example if you wiggle the RJ connector does the network connection light go on and off as you wiggle...that is a sign of a bad connector or a cold solder joint...but the process of soldering the boards these days are all automated so chances are that the soldering is ok. have you tried via USB?...

Posted on Oct 09, 2008

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