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Nighthawk AC1900 C7000v2 Downstream Channel Indicator Light Blinking with slow speeds
I am having issues with my Netgear Nighthawk AC1900 WIFI Cable Modem Router, Model C7000V2. It is about 5 months old. It was working fine for the last four months. Over a month ago, the indicator light that shows if downstream channel is locked is blinking green, which signifies downstream channel is not locked. Xfinity tells me I have strong signal. My Xfinity plan is 100 Mbps, wirless and wired connection speeds vary from 3-5 Mbps or 20-30 Mbps. Sometimes, the downstream indicator light stays solid green, but most of time is blinking. I have tried resetting it multiple times. I called Xfinity and they said no issue with lines and signal is strong. Can someone please tell me how I can troubleshoot this. I don't want to pay 90$ for a 6 month Netgear support contract if it something I can fix with help from the community. Thanks for your help.
If you've checked all the cables/connectors to ensure you're good, then the ISP needs to check the line as you have power issues (out of spec) and a bunch of errors
9 Replies
A screen snip of your cable connections page and event logs help us check your signal. Xfinity's first response is always "the line is fine".
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, bad/old/cheap connectors, or corroded connections. Replace them if you do.
If you can, simply connect the modem right where the coax comes into the home. This prevents wiring in the home from being the issue. And some ISP’s charge if the wiring issue is in the home. So this helps prevent this.Cable connection screenshot:
You have a ton of errors in the line, your power is way out of spec, and you have non locked channels.
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, bad/old/cheap connectors, or corroded connections. Replace them if you do.
If you can, simply connect the modem right where the coax comes into the home. This prevents wiring in the home from being the issue. And some ISP’s charge if the wiring issue is in the home. So this helps prevent this.If non of the above help, the isp needs to check the line.
