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High Uncorrectable codewords

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Frequent Visitor

High Uncorrectable codewords

I pay for 600down, I barely get 100. I use a netgear cm1000 and the connection is constantly fluctuating. Ive tried all the stuff, power cycle, modem reset, router reset, direct to modem. 

 

Any tips? Added my latest channel pic and then one after  i rebooted

Edit: not sure why but it wont let me upload pics. heres a imgur link: https://imgur.com/a/6ciKGgu

 
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Frequent Visitor

Re: High Uncorrectable codewords

prereboot (2).jpgafterreboot.jpg

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Expert

Re: High Uncorrectable codewords

The upstream power is too high  / out of spec. And the SNR's on some of the downstream channels are too low / out of spec. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, and latency problems.

In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.



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Re: High Uncorrectable codewords

My line coming to my modem, is a direct line from the box outside. I

live in condos and I know techs are always messing with the box out there and just swapping everyone around to give someone a better connection which making it less for someone else. (Previous tech told this was happening last time I had issues)

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Expert

Re: High Uncorrectable codewords

Sorry to hear that. Multiple dwellings are especially troublesome ! Guess you'll have to get a tech out again..... Good luck with it !



I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!