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Forum Discussion
Nighthawk CAX80 slow speeds on Xfinity
Hello all! My wife and I recently moved and have had issues with our internet speeds since. I work from home and while I'm still able to do my work the quality of my meetings has definitely dropp...
With this result, the ISP needs to get involved
"Cable Diagnostic
Status: Poor
Action:
[Partial Service]
If the Partial Service mode does not go away within a few hours (Click the Refresh button after each step):
1) Make sure the coaxial cable is tightly connected.
2) Remove any unnecessary splitters.
3) Replace any required ones.
4) Contact your service provider for troubleshooting help."
I see some correct and un-correctables on channels 17 thru 19 that should all be zero like the other channels.
Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.
Be sure to power OFF the modem for 1 minute then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router?article=24311
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
https://highspeed.tips/docsis-events/
Thanks so much for the quick reply!
I had a tech from my ISP out earlier today, and he tested the line up to my modem and showed a very consitent 1200-1300 Mbps down. When he tested the speed wired to my CAX80 the test showed very poor speeds which is what makes me think the issue is with my CAX80.
That said, we live in a townhouse that is connected to 4 other townhouses so I'm unsure if there are splitters anywhere between the modem and ISP service box.
How would I go about dealing with the correct and un-correctables on channels 17 through 19? Is that something I need can do or would I need to call Comcast again?
Thanks in advance!
Check for any bad coax connector fittings. Make sure there all screwed in and sug.
Possible bad coax cabling however I doubt that.
Possible coax line splitter causing some problems.
If others are near or on same line, possible some odd signal issue with these though doubt that.
Would have to take the modem to a different llocation, say friend or family if near by and if on same ISP, hook it up and test there.
May need to rent the ISP modem for short period to see if there HW does same thing or not. IF not, then it maybe a problem at the CAX80.