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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 lig...
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
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.
I don't have any amplifiers, signal attenuators, or splitters. No kinks, damage, or moisture in line. No improperly made ends, foil touching the copper coax line, or bad/old/cheap connectors or corroded connections.
I connected modem where coax comes into home. When I plugged into coax cable that connects to outside of house, the download speed went up to 75 Mbps, but the indicator light flashed showing no downstream channel connection. Please see cable connection results below when modem is connected directly to coax cable coming into home from outside.
When I hooked it up back inside house, I got slower speeds, but the downstream channel locked. See screenshot below.
Now after the modem being back online for about three hours, the downstream channel light is blinking again and my download speed went from 35 to 13 Mbps. See screenshot below for cable connection values. Looks like more errors and downstream channels not being locked again.