cm1200 upstream randomly will start blinking intermittently and lose internet

[wfulton2]

Spectrum says its not on there end to check with Netgear. here is my event log though.

Sat Oct 21 15:45:15 2023	Notice (6)	CM-STATUS message sent. Event Type Code: 5; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=80:cc:9c:b2:2b:70;CMTS-MAC=00:17:10:88:a4:9f;CM-QOS=1.1;CM-VER=3.1;
Sat Oct 21 15:41:33 2023	Warning (5)	REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=80:cc:9c:b2:2b:70;CMTS-MAC=00:17:10:88:a4:9f;CM-QOS=1.1;CM-VER=3.1;
Sat Oct 21 15:41:28 2023	Notice (6)	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2.;CM-MAC=80:cc:9c:b2:2b:70;CMTS-MAC=00:17:10:88:a4:9f;CM-QOS=1.1;CM-VER=3.1;
Sat Oct 21 15:41:23 2023	Notice (6)	TLV-11 - unrecognized OID;CM-MAC=80:cc:9c:b2:2b:70;CMTS-MAC=00:17:10:88:a4:9f;CM-QOS=1.1;CM-VER=3.1;
Sat Oct 21 15:41:23 2023	Error (4)	Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=80:cc:9c:b2:2b:70;CMTS-MAC=00:17:10:88:a4:9f;CM-QOS=1.1;CM-VER=3.1;
Sat Oct 21 15:41:23 2023	Error (4)	Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=80:cc:9c:b2:2b:70;CMTS-MAC=00:17:10:88:a4:9f;CM-QOS=1.1;CM-VER=3.1;
Time Not Established	Notice (6)	Overriding MDD IP initialization parameters; IP provisioning mode = IPv6
Time Not Established	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=80:cc:9c:b2:2b:70;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

[FURRYe38 · Accepted solution]

Power levels are with in spec:

https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router

However you have a ton of Correctables and Un-correctables that should be most zeros

Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box. 
Be sure your using good quality RG6 coax cable up to the modem. 
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, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
Be sure to power OFF the modem for 1 minute then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Mod...
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html

Be sure your using a good quality LAN cable between the modem and router. CAT6 is recommended. 

Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem.

[FURRYe38]

Please post a copy and paste of the modems connection status page.
https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-m...

Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem.
Be sure your using a good quality LAN cable between the modem and router. CAT6 is recommended. 
What is the brand and model of the host wifi router connected to the modem?

[wfulton2]

added 3 screenshots of cable modem status.

[FURRYe38 · Accepted solution]

Power levels are with in spec:

https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router

However you have a ton of Correctables and Un-correctables that should be most zeros

Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box. 
Be sure your using good quality RG6 coax cable up to the modem. 
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, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
Be sure to power OFF the modem for 1 minute then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Mod...
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html

Be sure your using a good quality LAN cable between the modem and router. CAT6 is recommended. 

Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem.