CAX80 poor network status and sometimes network dropped

[buddyb99]

Cannot solve poor cable connection. Below is the diagnostic.

Cable Connection

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Cable Diagnostic Status:   Poor Action:   [Partial Service] If the Partial Service mode does not go away within a few hours (Click the Refresh button after each step): 1) Make sure the coaxial cable is tightly connected. 2) Remove any unnecessary splitters. 3) Replace any required ones. 4) Contact your service provider for troubleshooting help. Internet Access:  Downstream Status:  Upstream Status:  Refresh Save Cable Diagnostic Info Advanced Information   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 597 MHz Locked Connectivity State OK Operational Boot State OK Operational Security Enabled BPI+   Downstream Bonded Channels (Partial Service)   Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables 1 Locked 256 QAM 14 597000000 Hz 0.5 dBmV 40.6 dB 0 0 2 Locked 256 QAM 2 525000000 Hz 0.9 dBmV 40.1 dB 0 0 3 Locked 256 QAM 3 531000000 Hz 0.9 dBmV 40.2 dB 0 0 4 Locked 256 QAM 4 537000000 Hz 1.1 dBmV 40.5 dB 0 0 5 Locked 256 QAM 5 543000000 Hz 0.8 dBmV 40.5 dB 0 0 6 Locked 256 QAM 6 549000000 Hz 0.7 dBmV 40.6 dB 0 0 7 Locked 256 QAM 7 555000000 Hz 1.1 dBmV 40.7 dB 0 0 8 Locked 256 QAM 8 561000000 Hz 1.0 dBmV 39.2 dB 0 0 9 Locked 256 QAM 9 567000000 Hz 0.8 dBmV 40.9 dB 1 0 10 Locked 256 QAM 10 573000000 Hz 0.8 dBmV 40.5 dB 0 0 11 Locked 256 QAM 11 579000000 Hz 0.7 dBmV 40.8 dB 2 0 12 Locked 256 QAM 12 585000000 Hz 0.3 dBmV 40.8 dB 0 0 13 Locked 256 QAM 13 591000000 Hz 0.3 dBmV 40.7 dB 3 0 14 Locked 256 QAM 1 519000000 Hz 1.1 dBmV 39.9 dB 0 0 15 Locked 256 QAM 15 603000000 Hz 0.5 dBmV 40.6 dB 0 0 16 Locked 256 QAM 16 609000000 Hz 0.3 dBmV 40.5 dB 2 0 17 Locked 256 QAM 17 495000000 Hz 1.1 dBmV 39.4 dB 0 0 18 Locked 256 QAM 18 501000000 Hz 0.9 dBmV 39.4 dB 0 0 19 Locked 256 QAM 19 507000000 Hz 1.0 dBmV 39.6 dB 0 0 20 Locked 256 QAM 20 513000000 Hz 1.1 dBmV 39.7 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 Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 Locked ATDMA 1 5120 Ksym/sec 36800000 Hz 38.0 dBmV 2 Locked ATDMA 2 5120 Ksym/sec 30350000 Hz 37.3 dBmV 3 Locked ATDMA 3 5120 Ksym/sec 23900000 Hz 36.5 dBmV 4 Not Locked Unknown 0 0 0 0.0 dBmV 5 Not Locked Unknown 0 0 0 0.0 dBmV 6 Not Locked Unknown 0 0 0 0.0 dBmV 7 Not Locked Unknown 0 0 0 0.0 dBmV 8 Not Locked Unknown 0 0 0 0.0 dBmV   Downstream OFDM Channels   Channel Lock Status Modulation / Profile ID Channel ID Frequency Power SNR / MER Active Subcarrier Number Range Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked 0 ,1 ,2 ,3 159 651000000 Hz 1.48 dBmV 38.4 dB 646 ~ 3449 72535164 72465703 0 2 Not Locked 0 0 0 Hz 0 dBmV 0 dB 0 ~ 4095 0 0 0   Upstream OFDMA Channels   Channel Lock Status Modulation / Profile ID Channel ID Frequency Power 1 Not Locked 0 0 0 Hz 0 dBmV 2 Not Locked 0 0 0 Hz 0 dBmV   Extended Upstream Transmit Power   Enable Extended Upstream Transmit Power   Current System Time:Mon Apr 04 19:04:58 2022   System Up Time:00:22:11

[plemans]

You have a lot of unlocked channels. And your upstream power isn't in line with where it should be in comparison to your downstream values. 

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.

[buddyb99]

Thanks Plemans, My gateway is connected directly to the coaxial cable coming from the box outside my building and I don't have any amplifiers, signal attenuators, or splitters from the coax. I've had RCN come out and check the line from outside up to my gateway and they cannot find any issues with the line (of course they are not well trained). I'm really stumped as to what the issue could be. Any other ideas or tests I can run?

[plemans]

Are you having issues with your connection other than the unlocked channels? 

Is it dropping?