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Forum Discussion
C7000v2 Internet randomly goes out and factory resets on his own
I am looking for some help with my cable modem router. I have a NetGear C7000v2 firmware V1.03.08. I have been having this issue for probably the last 4-6 months. I have tried trouble shooting wit...
Wow that's a big difference in power. What normally causes the power to be so high? I'm using the original power adaptor and the modem is on top of a dresser with plenty of ventilation.
These are the event logs:
Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem. Especially T3 Timeouts.
Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
The power needs to come down for sure.
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.
Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
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
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
https://highspeed.tips/docsis-events/
I appreciate your help and wanted to give an update. I called the ISP on Friday and they tried to trouble shoot the issue over the phone. I shared with them the issues of Criticals, Errors and Warnings, but said since it is not their modem they cannot reference those errors as the signal was good on their end. After an hour of trouble shooting and them provisioning the modem, they agreed to send a tech out.
Fast forward to Sunday, the tech said that everything was good on the line and even went as far as taking a ladder up to the pole to run diagnostics. From what he said, it looks like the issue causing it was from the cable box on the side of the house not being grounded. I recall seeing a ground wire, but didn't pay much attention when I was looking at it on Friday. He said everything should be good now that he grounded everything and included a new connection to the ISP box in the side of the house.
So far no issues in the past 24 hours and here is the cable logs as well. Power is higher than normal, but better than the previous picture as it also had +15 and -15, which the guy said he never seen before as his diagnostic tool wasn't triggering the no grounding issue.Normally I would be kicked off the internet at least 3-5 times today, but thankfully everything has worked as normal. I will give it another week or two to provide an update. Hopefully I can marked this as resolved as it was such a pain to have so many restarts to the point it triggered multiple factory restarts in the past few months.
Thank you for dedicating time to help me with these issues đPower is WAY TOO HIGH:
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
Going to burn out the modem eventually.Ask about installing a -6dbm attenuator on the line behind the modem.