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My friend's modem restarts itself.


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#1
therealgeek

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Hello, this message is on the behalf of my friend as he can't post:

His modem (Scientific Atlanta 2203C) Keeps resetting itself. The lights go Power-DS-US-Online-Link. It gets to US after power and ds are solid and will just keep blinking. (US = Upstream; DS = Downstream.)

He tried: Different modem, Different Cable, The cable connection cables (the black ones), Different outlet, Battery in, battery out, removing the router.

None of these have seemed to fix the issue. This will happen for anywhere from 1 week to a month on and off then it usually stops for awhile until starting up yet again. I've called my ISP (Brighthouse) which supplies me Earthlink and they don't know how to fix it. Earthlink just tells me to talk to brighthouse. The connection is a 6mpbs but I usually get 9/10 on speedtests so the connection is fine. (According to brighthouse.
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#2
therealgeek

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Changing the splitters fixed the issue!
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#3
DaffyKantReed

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Nice one.

Legacy splitters rated for less than 1000MHz on the high end can sometimes cause problems like you've just seen and fixed. The passive caps, coils, and resistors either roll off or simple do not pass the desired frequencies any longer.
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