OT Cable Modem Woes

[Mark Phillips]

A short recap on the problem....

I signed up for the Cox home cable plant support option - $7/month. Cox
came out yesterday and the technician said the signal as too strong, and he
removed an amplifier from the circuit and now the modem is not dropping the
signal. The new signal strength is 2-3 dBmV. My average ping time to
google.com also dropped by 2 ms! He did not change any cables. He did
replace some old splitters in the attic for the TVs, and the signal
strength there improved, too.

So, for once, Cox came through.....I think!

Thanks for all the advice!

Mark

On Sat, Feb 21, 2015 at 12:32 PM, Mark Phillips <mark at phillipsmarketing.biz>
wrote:

> Thanks again for all the input. I will check out the Cox service plan for
> $7.00/month and see if they can get it fixed!
>
> Mark
>
> On Sat, Feb 21, 2015 at 10:52 AM, Eric Oyen <eric.oyen at gmail.com> wrote:
>
>> I have the internal wiring insurance offered by Cox. SO far, its been
>> worth the additional $6 a month. The phone lines in this house (which are
>> covered) are about 50 years old. we will need to get them replace soon (my
>> ham radio keeps coming in on the phone). We had all the cable redone in the
>> house about 10 years ago, and even have a single dedicated line out to the
>> pedestal for the cable modem. So far, that one line is noise free and the
>> cable modem (a motorola make) has been chugging along happily for about 7
>> years.
>>
>> anyway, thats my story and I am sticking to it. :)
>>
>> -eric
>>
>>
>>
>> On Feb 21, 2015, at 9:18 AM, Michael Butash wrote:
>>
>> > As long as it's not RG-58 (stuff satellite usually installs), it's
>> probably ok.  Cox will only install RG-8 these days, so check what you have,
>> >
>> > My coax is going on 15-20 years old, and I've never had an issue with
>> it.  This isn't usually the issue
>> >
>> > Another thing that goes bad are splitters.  Mine has crapped out a few
>> times over the years too.  Since I never watch tv, and haven't had cable tv
>> since the 90's, I just removed all the splitters and use a 1-to-1 joint
>> from the external to my modem.
>> >
>> > Have cox replace your external line, they should do that for free, and
>> start there.
>> >
>> > What others will do/have done is get the "coverage" package from cox
>> per month, another 6-8 bucks, have them fix/replace your inside lines, and
>> cancel the service.  Janky., but I was told that by a cox field tech.  :)
>> >
>> > -mb
>> >
>> >
>> > On 02/20/2015 11:41 PM, Mark Phillips wrote:
>> >> Thanks for the info! Do you know any reasonable cable installers who
>> could replaces the coax in my house? It is over ten years old, and probably
>> the problem. The cable to the dmz is just a year old, and at the opposite
>> end of the house from the cable modem. I have also been having some issues
>> with the tvs in the house, so time to replaces all of it.
>> >>
>> >> Mark
>> >>
>> >> On Feb 20, 2015 9:35 PM, "Zany Yan" <sirlight at cox.net> wrote:
>> >> Mark,
>> >>
>> >> I used to have a LOT of problems with my Cox connection. It was
>> working then it would start recycle the modem like every 2 mins for a long
>> while. My signal was CRAP!!!!!
>> >>
>> >> Finally, it totally quit all together. Couldn't even connect. Finally,
>> a Cox technical person came over. Looked at my cable from the DMZ box on
>> the side of the house to inside with a meter and it was VERY bad.
>> >>
>> >> Ended up totally replacing the cable from the DMZ box all the way to
>> the cable modem.
>> >>
>> >> Once that was done, my connection came back.
>> >>
>> >> You want to call COX Internet technical support line, don't call the
>> help line. Make sure you keep telling them that the connection has been
>> dropping like crazy.
>> >>
>> >> Jon
>> >>
>> >> On 02/20/2015 08:06 PM, Mark Phillips wrote:
>> >> I have a 1-3 year old Motorola Surfboard SB6141 and Cox. The modem and
>> >> my LAN are up 24/7. Recently, I have been loosing my connection to the
>> >> Internet. My local LAN is up (I can ping/ssh other computers on the
>> LAN)
>> >> but I get and error message of "Can't resolve host" when I try to ping
>> >> google. A quick power off, wait 30 seconds, power on of the modem fixes
>> >> the problem. These outages are happening more frequently - daily for
>> the
>> >> last two days. The lights on the front of the modem are not different
>> >> between running normally and unable to access the Internet.
>> >>
>> >> The downstream signal to noise is 37 - 38 dB @ 14 dBmV. The upstream
>> >> power level is 41 - 45 dBmV.
>> >>
>> >> I am seeing this in the logs for the modem on a regular basis after the
>> >> reboots
>> >>
>> >> MIMO Event MIMO: Stored MIMO=-1 post cfg file
>> >>
>> MIMO=-1;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
>> >>
>> >> TLV-11 - unrecognized
>> >>
>> OID;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
>> >>
>> >> Do I need to buy a new modem? Is there anything Cox can do?
>> >>
>> >> Thanks,
>> >>
>> >> Mark
>> >>
>> >>
>> >>
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