CBR 750 frequent disconnects in mornings

Question

I have a CBR750 running firmware&nbsp; V4.6.14.4_2.3.12
I had frequent disconnects and Comcast came out 4 times, by the third time they could find no issues (scroll for current status).&nbsp;Netgear had me reset modem and downgrade the firmware.
&nbsp;
Worked mostly well for about a month. Now everyday, especially in the morning I get short disconnects:
[Internet connected] IP address: 73.156.70.142, Friday, Mar 31,2023 09:59:41[Internet disconnected] Friday, Mar 31,2023 09:59:40[Internet disconnected] Friday, Mar 31,2023 09:59:06[Admin login] from source 192.168.1.35, Friday, Mar 31,2023 09:56:42[Internet connected] IP address:&nbsp; , Friday, Mar 31,2023 09:54:44[Internet disconnected] Friday, Mar 31,2023 09:54:42
&nbsp;
Comcast shows no area outages.
&nbsp;
I also have to reboot the modem every day or so.
&nbsp;
Help, is it a bad modem?
&nbsp;
Here is my current status:

Procedure
Status
Comment

Acquire Downstream Channel
507000000 Hz
Locked

Connectivity State
Ok
Operational

Boot State
Ok
Operational

Security
Enabled
BPI+

IP Provisioning Mode
Honor MDD
honorMdd(4)

Downstream Bonded Channels

Channel
Lock Status
Modulation
Channel ID
Frequency
Power
SNR
Correctables
Uncorrectable

1
Locked
QAM 256
2
489000000 Hz
6.8 dBmV
40.3 dB
0
0

2
Locked
QAM 256
3
495000000 Hz
6.5 dBmV
38.9 dB
0
0

3
Locked
QAM 256
4
501000000 Hz
6.5 dBmV
38.9 dB
13
0

4
Locked
QAM 256
5
507000000 Hz
6.8 dBmV
38.9 dB
1
0

5
Locked
QAM 256
6
513000000 Hz
6.6 dBmV
38.9 dB
0
0

6
Locked
QAM 256
7
519000000 Hz
6.5 dBmV
38.9 dB
0
0

7
Locked
QAM 256
8
525000000 Hz
6.3 dBmV
38.6 dB
0
0

8
Locked
QAM 256
9
531000000 Hz
6.6 dBmV
38.9 dB
0
0

9
Locked
QAM 256
10
537000000 Hz
7.0 dBmV
38.9 dB
0
0

10
Locked
QAM 256
11
543000000 Hz
7.0 dBmV
38.9 dB
0
0

11
Locked
QAM 256
12
549000000 Hz
7.0 dBmV
38.9 dB
0
0

12
Locked
QAM 256
13
555000000 Hz
7.5 dBmV
38.6 dB
0
0

13
Locked
QAM 256
14
561000000 Hz
7.0 dBmV
38.9 dB
0
0

14
Locked
QAM 256
15
567000000 Hz
7.4 dBmV
38.9 dB
0
0

15
Locked
QAM 256
16
573000000 Hz
7.4 dBmV
38.9 dB
0
0

16
Locked
QAM 256
17
579000000 Hz
7.5 dBmV
38.6 dB
0
0

17
Locked
QAM 256
18
585000000 Hz
7.5 dBmV
38.9 dB
0
0

18
Locked
QAM 256
19
591000000 Hz
7.3 dBmV
38.9 dB
0
0

19
Locked
QAM 256
20
597000000 Hz
7.5 dBmV
38.9 dB
0
0

20
Locked
QAM 256
21
603000000 Hz
8.1 dBmV
38.9 dB
0
0

21
Locked
QAM 256
22
609000000 Hz
8.1 dBmV
38.9 dB
0
0

22
Locked
QAM 256
23
615000000 Hz
8.0 dBmV
38.9 dB
0
0

23
Locked
QAM 256
24
621000000 Hz
8.1 dBmV
38.9 dB
0
0

24
Locked
QAM 256
25
627000000 Hz
8.1 dBmV
38.6 dB
0
0

25
Locked
QAM 256
26
633000000 Hz
8.3 dBmV
38.6 dB
0
0

26
Locked
QAM 256
27
639000000 Hz
7.4 dBmV
38.6 dB
0
0

27
Locked
QAM 256
28
645000000 Hz
8.1 dBmV
38.9 dB
0
0

28
Locked
QAM 256
29
651000000 Hz
8.0 dBmV
38.9 dB
0
0

29
Locked
QAM 256
30
657000000 Hz
7.9 dBmV
38.6 dB
0
0

30
Locked
QAM 256
31
663000000 Hz
7.9 dBmV
38.9 dB
0
0

31
Locked
QAM 256
32
669000000 Hz
7.5 dBmV
38.6 dB
0
0

32
Not Locked
N/A
N/A
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
2560 Ksym/sec
10400000 Hz
43.8 dBmV

2
Locked
ATDMA
2
5120 Ksym/sec
16400000 Hz
44.0 dBmV

3
Locked
ATDMA
3
5120 Ksym/sec
22800000 Hz
44.3 dBmV

4
Locked
ATDMA
4
5120 Ksym/sec
29200000 Hz
43.8 dBmV

5
Locked
ATDMA
9
5120 Ksym/sec
35600000 Hz
42.8 dBmV

6
Locked
ATDMA
11
1280 Ksym/sec
39600000 Hz
42.8 dBmV

7
Not Locked
N/A
Unknown
0 Ksym/sec
0 Hz
0.0 dBmV

8
Not Locked
N/A
Unknown
0 Ksym/sec
0 Hz
0.0 dBmV

Downstream OFDM Channels

Channel
Lock Status
Modulation/Profile ID
Channel ID
Frequency
Power
SNR/MER
Active SubcarrierNumber Range
UnerroredCodewords
CorrectableCodewords
UncorrectableCodewords

1
Locked
3
33
690000000 Hz
7.4 dBmV
39.9 dB
1108~2987
0
0
0

2
Not Locked
0
0
0 Hz
0.0 dBmV
0.0 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
0.0 dBmV

2
Not Locked
0
0
0 Hz
0.0 dBmV

&nbsp;
&nbsp;

FURRYe38 · Answer

What speed tier package do you pay for UP and Down from the ISP?&nbsp;
&nbsp;
You have some channels that are running too high in power:
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
&nbsp;
Please post a copy and paste of the modems connection status and event log page.https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-router
&nbsp;
&nbsp;
What channels are you using?&nbsp;Any Wifi Neighbors near by? If so, how many?

mjposner · Answer

I have comcast's fastest available setup 900mb.
&nbsp;
What channels are you using? Wireless is auto for 2.4, channel 48 for 5mhz (i have the same issue when connected by wire as well)
Any Wifi Neighbors near by? If so, how many?&nbsp; None
&nbsp;
You have some channels that are running too high in power:&nbsp; Comcast already installed a splitter to reduce power level
&nbsp;

&nbsp;

FURRYe38 · Answer

The ISP needs to review and resolve any Critical, Errors or Warnings seen in the Event logs.&nbsp;
&nbsp;
Can you post a new capture of the Cable Connections status page so we can check the new power levels?&nbsp;
&nbsp;

mjposner · Answer

Comcast has come out 4 times.&nbsp; They say the best they can tell I have a good signal to the house.&nbsp;They did say db power was to high, so they added splitter to lower power level (as high as 10.8 on Channel 1)&nbsp;I replaced the cable line from the modem to the cable box on the back of my house...still had some disconnects.&nbsp;Comcast says I am at the end of the cable line for my street (older overhead lines) so that's that.&nbsp;Almost all disconnects are between 9:00 and 2:00.&nbsp;&nbsp;

FURRYe38 · Answer

Well power is better. However the power levels in between each channel is not with in 3db of each other. You have channel 1 at 7db and it all all falling down to 1.2db on channel 31.&nbsp;
&nbsp;
You might ask the ISP for a temp load of one of there modem units and see if the problem continues or not with theres. This would give you more direction.&nbsp;

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CBR 750 frequent disconnects in mornings

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