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Forum Discussion
CM500 cable modem -- losing connections & grounding
Heya folks...would like to get insight on grounding, in-house wiring, and cable modems here. Currently with Comcast and a CM500, was fine for a few years, now currently dealing with several losses of...
What is the brand and model of the host wifi router connected to the modem?
Please post a copy and paste of the modems connection status page.
Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly. If a tech is needed on site, ask for one.
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://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
Hey Furry...thanks for taking a look at the message. The troubleshooting details you're asking about are in the link to Comcast forum post at the bottom of my message, and has all the relevant background. Router is a Netgear Nighthawk, it's irrelevant to this post, as I've taken it out of the equation. Realize you're just catching up on details I've already been through, so thank you again for taking a look!
I am specifically jumping past all those details to ask specifically about cable modem sensitivities to variations in house electricity groundings, and would love to know more about that.
Or maybe the modem is just flakey and I need to get a new one...?
You'll need to get with the ISP and have them check the items mentioned here. Most modem issues found are betweent the ISP service and modem.
Good Luck.
Hi Furry...realize you're on the front lines of all kinds of networking issues and see repeat incidents over and over. In this case, I've already had a tech to the house and am trying to understand the impact of house electric grounding to a Netgear CM500 cable modem. Can't imagine I'm the only one who's run into this.
Have seen lots of support incidents trace connectivity issues back to line issues from the street or a bad splitter somewhere, or maybe the ISP monkeying with something the customer doesn't know about...in this case the ISP is SUGGESTING that my variable house current is causing the cable modem to hiccup, resulting in packet loss. Do you have any experience with that angle?
Thanks again for listening!