Internet goes down multiple times a day

[Jmarple]

Hello,  I'm desperate for help.

my internet connection goes down multiple times a day and I'm beyond frustrated.  I have an Arris Surfboard modem  SB6183 and a TPLink mesh network (S4).  

I've replaced both modem and mesh equipment and nothing helped.  I moved the equipment to connnect to the coax that comes into the house from the street.  That didn't help.  

I've tried everything I know to do and still, this keeps happening and has been going on for months now.  Please help me figure this out, Comcast is my only option for internet. 

[BruceW]

Are you connecting via Wifi or Ethernet? If Wifi, it's best to switch to an Ethernet cable connection if possible. That would allow you to determine whether the problem is the Wifi signal or the link between your equipment and Comcast's network. Network connection problems that affect both Ethernet and Wifi devices are often due to poor coax connections or damaged coax cable, usually in or near your home.

If you want to troubleshoot this yourself, please see Internet Troubleshooting Tips. If you still need help, please post your modem or gateway's model number and signal information, especially downstream power levels and SNR, upstream power levels, and error log.

If you can't find the problem or you'd rather have Comcast take care of it, call them at the phone number on your bill or 1-800-Comcast, or use one of the options on https://www.xfinity.com/support/contact-us/. If they can't fix the problem remotely, insist they send a tech out to identify the cause and correct it.

If the tech finds bad coax, splitters, amplifiers, or connections in your home (even if Comcast originally supplied them) you'll probably have to pay for the visit unless you have their Service Protection Plan (https://www.xfinity.com/support/articles/service-protection-plan, closed to customers that don't already have it). If the trouble is due to a faulty Comcast rental device, or anything outside your home, you shouldn't be charged.

[Jmarple]

Hi @BruceW ,

I'll post logs tomorrow so I can try to do this myself.  

If the typical network connection problems are related to poor coax connections or damaged coax cable, then it has to be outside because right now, the modem is connected to the coax that comes into the house. 

With respect to the Internet Troubleshooting Tips:

* I have restarted the modem so many times to get my network back online I can't even count any more.

* There are no network interruptions and my equipment is all compatible and current.

* The issues are modem/ signal based, not wi-fi / router based.

I'll  check signal levels and post logs tomorrow.  Looking forward to your thoughts!  

[Jmarple]

@BruceW 

Here are my signal levels...

Startup Procedure

Procedure	Status	Comment
Acquire Downstream Channel		Locked
Connectivity State	OK	Operational
Boot State	OK	Operational
Configuration File	OK
Security	Enabled	BPI+
DOCSIS Network Access Enabled	Allowed

Downstream Bonded Channels

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Corrected	Uncorrectables
1	Locked	QAM256	11	489000000 Hz	-13.9 dBmV	36.1 dB	0	0
2	Locked	QAM256	1	405000000 Hz	-12.1 dBmV	37.0 dB	0	0
3	Locked	QAM256	2	411000000 Hz	-12.0 dBmV	37.0 dB	0	0
4	Locked	QAM256	3	417000000 Hz	-12.2 dBmV	37.0 dB	0	0
5	Locked	QAM256	4	423000000 Hz	-12.5 dBmV	36.9 dB	0	0
6	Locked	QAM256	5	453000000 Hz	-13.5 dBmV	36.5 dB	0	0
7	Locked	QAM256	6	459000000 Hz	-13.6 dBmV	36.4 dB	0	0
8	Locked	QAM256	7	465000000 Hz	-13.4 dBmV	36.5 dB	0	0
9	Locked	QAM256	8	471000000 Hz	-13.3 dBmV	36.4 dB	0	0
10	Locked	QAM256	9	477000000 Hz	-13.3 dBmV	36.4 dB	0	0
11	Locked	QAM256	10	483000000 Hz	-13.5 dBmV	36.3 dB	0	0
12	Locked	QAM256	12	495000000 Hz	-13.8 dBmV	36.0 dB	0	0
13	Locked	QAM256	13	519000000 Hz	-13.2 dBmV	35.3 dB	0	0
14	Locked	QAM256	14	525000000 Hz	-13.7 dBmV	35.9 dB	0	0
15	Locked	QAM256	15	531000000 Hz	-13.7 dBmV	35.9 dB	0	0
16	Locked	QAM256	16	537000000 Hz	-13.7 dBmV	35.8 dB	0	0

Upstream Bonded Channels

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	36	5120 Ksym/sec	36500000 Hz	53.3 dBmV
2	Locked	ATDMA	33	5120 Ksym/sec	17300000 Hz	52.5 dBmV
3	Locked	ATDMA	34	5120 Ksym/sec	23700000 Hz	52.8 dBmV
4	Locked	ATDMA	35	5120 Ksym/sec	30100000 Hz	53.8 dBmV

[Jmarple]

I also checked the event log which shows a ton of critical errors.... how do I address these??

Event Log

The table below contains the log of events that the SB6183 has detected. This log can be important to the service provider to help diagnose and correct problems, if any should occur.

Time Priority Description

Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Sun Aug 02 18:15:37 2020	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Sun Aug 02 18:15:37 2020	Critical (3)	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Sun Aug 02 18:15:37 2020	Critical (3)	16 consecutive T3 timeouts while trying to range on upstream channel 3;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Sun Aug 02 18:16:29 2020	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Sun Aug 02 18:16:29 2020	Critical (3)	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Sun Aug 02 18:16:29 2020	Critical (3)	16 consecutive T3 timeouts while trying to range on upstream channel 1;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Sun Aug 02 18:17:08 2020	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Sun Aug 02 18:21:28 2020	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Sun Aug 02 18:41:59 2020	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Sun Aug 02 18:41:59 2020	Critical (3)	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Sun Aug 02 18:41:59 2020	Critical (3)	16 consecutive T3 timeouts while trying to range on upstream channel 0;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Sun Aug 02 18:42:20 2020	Critical (3)	No Ranging Response received - T3 time-out
Sun Aug 02 18:42:30 2020	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Sun Aug 02 18:42:48 2020	Critical (3)	TLV-11 - Illegal Set operation failed;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Sun Aug 02 18:44:15 2020	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Sun Aug 02 18:44:59 2020	Critical (3)	No Ranging Response received - T3 time-out
Sun Aug 02 18:45:09 2020	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Sun Aug 02 18:45:26 2020	Critical (3)	TLV-11 - Illegal Set operation failed;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Sun Aug 02 19:10:18 2020	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Sun Aug 02 19:14:34 2020	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Mon Aug 03 02:26:59 2020	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.0;CM-VER=3.0;
Mon Aug 03 09:06:16 2020	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Mon Aug 03 09:11:05 2020	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Mon Aug 03 09:20:24 2020	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Mon Aug 03 09:24:44 2020	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=f8:a0:97:b5:ee:01;CMTS-MAC=00:01:5c:6e:92:4c;CM-QOS=1.1;CM-VER=3.0;
Time Not Established	Notice (6)

[BruceW]

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@Jmarple wrote: ... Here are my signal levels...

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The power levels are out of spec. Downstream is too low, and Upstream is too high. The error log entries are most likely the result of these signal problems.

If you cannot fix this yourself you should have Comcast take care of it as stated above.

[Jmarple]

How do I adjust the power levels, down stream, up stream? Is there a guide here that I missed @BruceW ?

[BruceW]

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@Jmarple wrote: ... How do I adjust the power levels, down stream, up stream? ...

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Please see the "Inspect cabling", "Check F-Connectors", and "Check the quality/status of all splitters" sections of Internet Troubleshooting Tips. If you can't fix it, call Comcast.