Netgear ORBI CBR750 Wifi6 router with cable modem frequently drops the Internet

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PeterB
PeterB Posts: 2 Spectator
edited February 21 in Connectivity

And requires a reboot for it to work again. Lately this happens at least once a day while previously it worked fine for months at end. There have been no changes at my end. I live in zip code 92625 and all the wiring in my house (electrical, ethernet, and cable) was replaced about 2 years ago. My average Internet download speed is 500Mbs. Other than this issue, I have been very happy with Spectrum Internet service.

Below is the event log with on top the events that occurred during a recent Internet drop. Do any of those entries provide a clue what might be wrong? Specifically, I wonder about "Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW".

Thanks in advance for any response.

Time Priority Description

Jan 10 2024 18:07:13 Critical (3) SYNC Timing Synchronization failure - Loss of Sync

Jan 10 2024 18:07:13 Critical (3) SYNC Timing Synchronization failure - Loss of Sync

Jan 10 2024 18:07:13 Critical (3) SYNC Timing Synchronization failure - Loss of Sync

Jan 10 2024 18:07:13 Critical (3) SYNC Timing Synchronization failure - Loss of Sync

Jan 10 2024 18:07:13 Notice (6) CM-STATUS message sent. Event Type Code: 24

Jan 10 2024 18:07:14 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW

Jan 10 2024 18:07:15 Critical (3) SYNC Timing Synchronization failure - Loss of Sync

Jan 10 2024 18:07:17 Notice (6) CM-STATUS message sent. Event Type Code: 24

Jan 11 2024 10:08:58 Notice (6) US profile assignment change. US Chan ID: 1

Jan 11 2024 10:09:00 Notice (6) CM-STATUS message sent. Event Type Code: 5

Jan 11 2024 10:16:09 Critical (3) SYNC Timing Synchronization failure - Loss of Sync

Jan 11 2024 10:16:29 Notice (6) CM-STATUS message sent. Event Type Code: 5

Jan 11 2024 10:19:01 Notice (6) US profile assignment change. US Chan ID: 1

Jan 11 2024 10:27:23 Critical (3) SYNC Timing Synchronization failure - Loss of Sync

Jan 11 2024 10:27:30 Notice (6) CM-STATUS message sent. Event Type Code: 5

Jan 11 2024 10:28:48 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW

Jan 11 2024 10:30:06 Critical (3) SYNC Timing Synchronization failure - Loss of Sync

Jan 11 2024 10:30:12 Notice (6) CM-STATUS message sent. Event Type Code: 5

Jan 11 2024 10:31:31 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW

Jan 11 2024 10:33:11 Critical (3) SYNC Timing Synchronization failure - Loss of Sync

Jan 11 2024 10:33:14 Notice (6) US profile assignment change. US Chan ID: 1

Jan 11 2024 10:33:22 Notice (6) CM-STATUS message sent. Event Type Code: 5

Jan 11 2024 10:36:07 Critical (3) SYNC Timing Synchronization failure - Loss of Sync

Jan 11 2024 10:36:29 Notice (6) CM-STATUS message sent. Event Type Code: 24

Jan 11 2024 13:25:38 Notice (6) US profile assignment change. US Chan ID: 1

Jan 11 2024 16:43:34 Critical (3) SYNC Timing Synchronization failure - Loss of Sync

Jan 11 2024 16:43:49 Notice (6) CM-STATUS message sent. Event Type Code: 5

Jan 11 2024 16:53:37 Notice (6) US profile assignment change. US Chan ID: 1

Jan 11 2024 17:12:59 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW

Jan 11 2024 17:24:21 Notice (6) US profile assignment change. US Chan ID: 1

Jan 11 2024 17:24:32 Notice (6) CM-STATUS message sent. Event Type Code: 24

Jan 11 2024 17:34:47 Critical (3) SYNC Timing Synchronization failure - Loss of Sync

Jan 11 2024 17:35:03 Notice (6) CM-STATUS message sent. Event Type Code: 24

Jan 11 2024 17:35:20 Critical (3) SYNC Timing Synchronization failure - Loss of Sync

Jan 11 2024 17:35:23 Notice (6) CM-STATUS message sent. Event Type Code: 24

Jan 11 2024 17:52:09 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW

Jan 11 2024 17:52:15 Notice (6) CM-STATUS message sent. Event Type Code: 24

Jan 11 2024 17:53:33 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW

Jan 11 2024 17:55:46 Critical (3) SYNC Timing Synchronization failure - Loss of Sync

Jan 11 2024 17:56:17 Notice (6) CM-STATUS message sent. Event Type Code: 24

Jan 11 2024 18:06:40 Warning (5) MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1

Jan 11 2024 18:06:48 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW

Jan 11 2024 18:06:52 Alert (2) CM Certificate Error

Best Answer

  • William_M
    William_M Posts: 1,085 ✅ Verified Employee Moderator
    Answer ✓
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    Hi @PeterB, welcome to our community!

    I recommend trying one more reboot but this time remove both the power cord and coaxial cable from the modem for at least 30 seconds, tap the tip of the coax port on the modem, and then reconnect starting the the coax first. If the issue persists afterward the next steps would be replacing the modem or scheduling an appointment with a technician to check the signals.

Answers

  • PeterB
    PeterB Posts: 2 Spectator
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    Thanks, William. To be honest, I was a little skeptical that your suggestion would work but it has been a week now, and no Internet drop-outs! Just for my benefit so I understand why, what is the reason disconnecting the coax cable and tapping the tip of the modem's coax port resolved the problem?

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