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Forum Discussion
wingbike
Jul 28, 2025Aspirant
My downstream LED went out a few days ago but the CM3000 is fully functional
 I as well have the Xfinity Gigabit X2 plan. My downstream LED went out a few days ago but the CM3000 is fully functional and all 32 downstream channels are locked.  I installed this modem on 1/15/202...
FURRYe38
Aug 02, 2025Guru - Experienced User
Ya screen captures appear however the text is so tiny, I can't make anything out. Can you select with the mouse cursor and highlight the data on the page and then paste it into your next post?
wingbike
Aug 02, 2025Aspirant
Thanks FURRYe38,
There was a cable save on the CM3000 web page. I will paste it. When I saved it the downstream and online LED's were both out. They stayed out for several hours only flashing once or twice. Later in the day the downstream came back on but the online is still out. Yesterday I rebooted the modem, and the online LED never came on during boot up and stayed out.
It's very strange how the modem can be fully functional, and the modem status page looks good. I never saw a flaky LED so it must be an internal led driver etc., unless it's a bad surface mount soldering.
Cable Diagnostic
Status: Good
Action:
Your setup looks fine. If you can't access the internet, make sure you properly activated the modem. If modem has been activated and you still can't access the internet, contact your service provider for troubleshooting help.
If you can access the internet but has other internet issue, the Netgear Cable Knowledge Base can provide additional troubleshooting info.
CM Status: Good
Downstream Status: Good
Downstream Power Level: Good
Downstream SNR Level: Good
Upstream Status: Good
Upstream Power Level: Good
Current Time: Sat Aug 02 08:24:49 2025
Startup Procedure
Acquire Downstream Channel: 513000000 Hz  Locked
Connectivity State:          OK       Operational
Boot State:                  OK       Operational
Security:                   Enabled   BPI+
IP Provisioning Mode:       Honor MDD   IPv6 only
Downstream Bonded Channels
Channel LockedStatus Modulation ChannelID  Frequency     Power    SNR   Correctables Uncorrectables     
      1     Locked     QAM256     20     513000000 Hz     -1     43.4     0     0
      2     Locked     QAM256     13     471000000 Hz     -0.1     44.3     0     0
      3     Locked     QAM256     14     477000000 Hz     -0.3     44.2     0     0
      4     Locked     QAM256     15     483000000 Hz     -0.3     44.2     0     0
      5     Locked     QAM256     16     489000000 Hz     -0.5     44     0     0
      6     Locked     QAM256     17     495000000 Hz     -0.5     44     0     0
      7     Locked     QAM256     18     501000000 Hz     -0.9     43.6     0     0
      8     Locked     QAM256     19     507000000 Hz     -0.8     43.5     0     0
      9     Locked     QAM256     21     519000000 Hz     -1     43.7     0     0
     10     Locked     QAM256     22     525000000 Hz     -1.1     43.7     0     0
     11     Locked     QAM256     23     531000000 Hz     -1.1     43.7     0     0
     12     Locked     QAM256     24     537000000 Hz     -1.1     43.6     0     0
     13     Locked     QAM256     25     543000000 Hz     -1     43.6     0     0
     14     Locked     QAM256     26     549000000 Hz     -1     43.6     0     0
     15     Locked     QAM256     27     555000000 Hz     -0.8     43.7     0     0
     16     Locked     QAM256     28     561000000 Hz     -1     43.5     0     0
     17     Locked     QAM256     29     567000000 Hz     -0.9     43.6     0     0
     18     Locked     QAM256     30     573000000 Hz     -1     43.5     0     0
     19     Locked     QAM256     31     579000000 Hz     -1.1     43.1     0     0
     20     Locked     QAM256     32     585000000 Hz     -1     43.2     0     0
     21     Locked     QAM256     33     591000000 Hz     -1.2     43.3     0     0
     22     Locked     QAM256     34     597000000 Hz     -1.1     43.2     0     0
     23     Locked     QAM256     35     603000000 Hz     -1.3     43.2     0     0
     24     Locked     QAM256     36     609000000 Hz     -1.2     43.4     0     0
     25     Locked     QAM256     37     615000000 Hz     -1.3     43.2     0     0
     26     Locked     QAM256     38     621000000 Hz     -1.1     43.3     0     0
     27     Locked     QAM256     39     627000000 Hz     -1.1     43.3     0     0
     28     Locked     QAM256     40     633000000 Hz     -1.3     43.2     0     0
     29     Locked     QAM256     41     639000000 Hz     -1.1     43.3     0     0
     30     Locked     QAM256     42     645000000 Hz     -1     43.4     0     0
     31     Locked     QAM256     43     651000000 Hz     -0.7     43.5     0     0
     32     Locked     QAM256     44     657000000 Hz     -0.6     43.2     0     0
Upstream Bonded Channels
Channel   LockedStatus  ChannelType ChannelID   SymbolRate        Frequency       Power     
      1       Locked       ATDMA      1       5120 Ksym/sec       16400000 Hz       43.5 dBmV
      2       Locked       ATDMA      2       5120 Ksym/sec       22800000 Hz       43.0 dBmV
      3       Locked       ATDMA      3       5120 Ksym/sec       29200000 Hz       42.8 dBmV
      4       Locked       ATDMA      4       5120 Ksym/sec       35600000 Hz       42.5 dBmV
      5       Not Locked       Unknown      0       0       0       0.0
      6       Not Locked       Unknown      0       0       0       0.0
      7       Not Locked       Unknown      0       0       0       0.0
      8       Not Locked       Unknown      0       0       0       0.0
Downstream OFDM Channels
Channel   LockedStatus  ProfileID  ChannelID    Frequency       Power       SNR/MER    ActiveSubcarrier    Unerror    Correctable   Uncorrectable
      1     Locked     0 ,1 ,2 ,3     193     690000000 Hz     -1.52 dBmV     42.4 dB     568 ~ 3527     643212108     556193356     212735
      2     Locked     0 ,1 ,2 ,3     194     957000000 Hz     -4.52 dBmV     40.7 dB     148 ~ 3947     645522314     579525469     0
Upstream OFDMA Channels
Channel   LockedStatus    ProfileID    ChannelID    Frequency       Power
      1     Locked     12 ,13     41     36200000 Hz     35.8 dBmV
      2     Not Locked     0      0     0 Hz     0 dBmV