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Forum Discussion
Nighthawk CAX30 modem stopped working router still fine
Would it be likely that just the modem portion of this device would fail? The router works fine, but the downstream light flashes while the upstream and internet indicators are dark. We just had Xf...
Possible.
Has a factory reset been performed and setup from scratch. Might try this with the ISP coax cable disconnected then re-connect it after about 1 minute.
Can you provide the following from the modem? Please post a copy and paste of the modems connection status and event log page.
https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-modem-modem-router
https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-router
What FW version is loaded on the modem?
- Cable Diagnostic
Status: Bad
Action:
[Internet Access]
1) If you still see this message after 5 minutes, make sure coaxial cable is tightly connected.
2) Inspect the splitters. Remove any unnecessary splitters or replace it with a new one.
3) Use a different coaxial cable if available and connect directly without the splitter. Also, check if service is on this line.
4) If you still can't resolve the problem, contact your service provider for troubleshooting help.
Internet Access:
Downstream Status:
Upstream Status:
Refresh Save Cable Diagnostic Info
Frequency start Value
This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.
Starting Frequency
Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 0 In progress
Connectivity State In progress Not Synchronized
Boot State In progress Unknown
Security Failed BPI+
IP Provisioning Mode In progress Unknown
All zero below that. Since I already did a reset, it cleared the old dataSo no visible data down below that has power and correctables and such on the page?
With the ISP cable coax disconnected from the modem along with all other ethernet devices, try a 30-30-30 reset on the modem. Use a stop watch or timer to time the 30 second presses:
With the router plugged in and powered on, depress the reset button for 30 seconds. This button is usually a tiny dot recessed into the back of the modem. You may need a jeweler's screwdriver or a bent paperclip to access it.
While still holding down the button, unplug the modem from its power source for another 30 seconds.
With the reset button still held down, turn the power back on and hold for another 30 seconds.- No change. Still just a flashing downstream white indicator.
All three (internet, upstream and downstream) flash white on start up, but only downstream continues flashing.
- Literally all zeroes
Cable Diagnostic
Startup Procedure
CM status: NOT_SYNCHRONIZED
DownstreamChannel: 0Hz In progress
ConnectivityState: In progress notSynchronized(3),
BootState: In progress
Security: Failed
IPProvisioningMode: 3 Unknown
Downstream Bonded Channels
Channel LockedStatus Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
2 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
3 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
4 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
5 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
6 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
7 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
8 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
9 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
10 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
11 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
12 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
13 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
14 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
15 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
16 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
17 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
18 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
19 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
20 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
21 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
22 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
23 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
24 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
25 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
26 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
27 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
28 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
29 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
30 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
31 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
Upstream Bonded Channels
Channel LockedStatus ChannelType Channel ID SymbolRate Frequency Power
1 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
2 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
3 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
4 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
5 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
Downstream OFDM Channels
Channel Channel ID Frequency Power SNR/MER ActiveSubcarrier Correctable Uncorrectable
1 0 0 Hz 0 dBmV 0 dB 0 ~ 0 0 0
2 0 0 Hz 0 dBmV 0 dB 0 ~ 0 0 0
Upstream OFDMA Channels
Channel UpstreamMuted RangingStatus Subc Zero Freq ActiveSubcarrier SymbolsPerFrame Power
1 n/a Other 0 MHz 0 ~ 0 0 0 dBmV
2 n/a Other 0 MHz 0 ~ 0 0 0 dBmVOk, thanks for posting that, ya, seems like the modem side has failed. See what NG support has to offer.
You'll need to get something to replace the CAX30.
- Firmware version 2.2.2.2
I did several hard resets but not with the coax unplugged. I can try that. - Tried factory reset with coax unplugged. Same result.