Motorola Surfboard Help

Discussion in 'OT Technology' started by dOOfus, Jun 6, 2007.

  1. dOOfus

    dOOfus OT Supporter

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    My internet hasn't been working for the past week and a half. The other times when it is working, I get horrible speeds. Right now it is working fine. I have called my ISP multiple times and they said it was due to an outage, but now they are saying my modem is dying on me. How can I tell if the problem is my modem or it is their problem? I have a SB5120.

    Signal to Noise Ratio 28 dB
    Downstream Power Level -8 dBmV
    Upstream Power Level 54 dBmV

    My ISP states the SNR should be >33, downstream power level should be between -12 and 12, and upstream power level should be between 35-50.
     
  2. P07r0457

    P07r0457 New Member

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    are you using a few splitters? The SNR is low. The downstream dBmV is low but within spec. The Upstream is too high. The modem isn't getting the signal in that in needs, and it's over-compensating the output.

    Said it a million times, but welcome to shitty cable.

    The SB5120 is shitty in terms of cable modems. Everything I've read says you want the SB5101 unless you have a specific need of a featureset found in the 5120.

    If possible, try the modem right after the dmarc. Eliminate inside influences as the culprit.
     
  3. dOOfus

    dOOfus OT Supporter

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    I don't think I'm using splitters. I am not sure. Like I said, this only started happening recently. Until now, I was getting 5/512 as advertised. The house I live in is only a year old, so when I got the cable service, Charter themselves installed everything. So what you are saying is that my modem is fine correct? Its the wiring that has problems? And I do not understand what you mean by dmarc.
     
  4. P07r0457

    P07r0457 New Member

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    dmarc is where teh charter drop connects to your homes wiring.

    modem is probably okay. surfboards are infamous for overheating and needing reboots, but if that's not fixing it then you'll want a tech to visit your residence.

    Do you have dsl available in your area?
     
  5. dOOfus

    dOOfus OT Supporter

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    I believe so, ATT's website says they offer 1.5 and 3, but when I called in, the rep said no. I'll have to talk to them again to get it sorted out. Do you know if anything else is available in 91775?
     
  6. P07r0457

    P07r0457 New Member

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    your loop length may be outside 19,200 feet... If so, you're SOL for DSL.
     
  7. dOOfus

    dOOfus OT Supporter

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    How can I find out?
     
  8. P07r0457

    P07r0457 New Member

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    call att?
     
  9. dOOfus

    dOOfus OT Supporter

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    Ohh :mamoru:
     
  10. dOOfus

    dOOfus OT Supporter

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    Thanks jollyogre, Charter sent a tech out today and they found out something was loose in the wiring which caused a bad signal. Everything is fine again.

    Signal to Noise Ratio 35 dB
    Power Level -1 dBmV
    Power Level 46 dBmV
     

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