I am used to seeing a near perfect signal profile on my CM2050V. I have 1200/40 service and internet Speedtest at the router level was near 1200 down but is now stuck 130 to 200 even with reboot.
yesterday there was an Xfinity van with a guy working at the “tap” box near my driveway - I didn’t get a chance to ask him what he is doing
the diagnostics run via the Xfinity chat troubleshooter claim the network and cable modem look good from their side
advice?
see following cable status page:
| 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. |
|
|
|
|
| Startup Procedure |
| Procedure |
Status |
Comment |
| Acquire Downstream Channel |
537000000 Hz |
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 |
QAM256 |
20 |
537000000 Hz |
-1.2 dBmV |
42.0 dB |
1 |
0 |
| 2 |
Locked |
QAM256 |
4 |
435000000 Hz |
1.8 dBmV |
43.2 dB |
1 |
0 |
| 3 |
Locked |
QAM256 |
5 |
441000000 Hz |
2.0 dBmV |
43.3 dB |
1 |
0 |
| 4 |
Locked |
QAM256 |
6 |
447000000 Hz |
2.2 dBmV |
43.3 dB |
1 |
0 |
| 5 |
Locked |
QAM256 |
7 |
453000000 Hz |
2.3 dBmV |
43.3 dB |
2 |
0 |
| 6 |
Locked |
QAM256 |
8 |
459000000 Hz |
2.3 dBmV |
43.1 dB |
1 |
0 |
| 7 |
Locked |
QAM256 |
9 |
465000000 Hz |
2.5 dBmV |
43.2 dB |
264 |
35 |
| 8 |
Locked |
QAM256 |
10 |
471000000 Hz |
2.5 dBmV |
42.3 dB |
1 |
0 |
| 9 |
Locked |
QAM256 |
11 |
477000000 Hz |
2.6 dBmV |
42.9 dB |
1 |
0 |
| 10 |
Locked |
QAM256 |
12 |
483000000 Hz |
2.1 dBmV |
43.1 dB |
0 |
0 |
| 11 |
Locked |
QAM256 |
13 |
489000000 Hz |
1.9 dBmV |
43.1 dB |
0 |
0 |
| 12 |
Locked |
QAM256 |
14 |
495000000 Hz |
2.0 dBmV |
43.1 dB |
0 |
0 |
| 13 |
Locked |
QAM256 |
15 |
507000000 Hz |
1.3 dBmV |
40.9 dB |
0 |
0 |
| 14 |
Locked |
QAM256 |
16 |
513000000 Hz |
0.8 dBmV |
38.1 dB |
0 |
0 |
| 15 |
Locked |
QAM256 |
17 |
519000000 Hz |
0.1 dBmV |
36.5 dB |
1 |
0 |
| 16 |
Locked |
QAM256 |
18 |
525000000 Hz |
-0.8 dBmV |
42.3 dB |
2 |
0 |
| 17 |
Locked |
QAM256 |
19 |
531000000 Hz |
-0.9 dBmV |
42.2 dB |
0 |
0 |
| 18 |
Locked |
QAM256 |
21 |
543000000 Hz |
-1.4 dBmV |
42.0 dB |
0 |
0 |
| 19 |
Locked |
QAM256 |
22 |
549000000 Hz |
-1.6 dBmV |
33.3 dB |
1 |
0 |
| 20 |
Locked |
QAM256 |
23 |
555000000 Hz |
-1.4 dBmV |
26.7 dB |
161546515 |
4884717 |
| 21 |
Not Locked |
Unknown |
24 |
561000000 Hz |
0.0 dBmV |
0.0 dB |
0 |
0 |
| 22 |
Not Locked |
Unknown |
25 |
567000000 Hz |
0.0 dBmV |
0.0 dB |
0 |
0 |
| 23 |
Not Locked |
Unknown |
26 |
573000000 Hz |
0.0 dBmV |
0.0 dB |
0 |
0 |
| 24 |
Not Locked |
Unknown |
27 |
579000000 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 |
Locked |
QAM256 |
29 |
591000000 Hz |
0.5 dBmV |
30.9 dB |
26643 |
6126 |
| 27 |
Locked |
QAM256 |
30 |
597000000 Hz |
0.5 dBmV |
36.2 dB |
1 |
0 |
| 28 |
Locked |
QAM256 |
31 |
603000000 Hz |
0.4 dBmV |
41.6 dB |
1 |
0 |
| 29 |
Locked |
QAM256 |
32 |
609000000 Hz |
0.3 dBmV |
41.8 dB |
1 |
0 |
| 30 |
Locked |
QAM256 |
33 |
615000000 Hz |
0.3 dBmV |
41.9 dB |
1 |
0 |
| 31 |
Locked |
QAM256 |
34 |
621000000 Hz |
0.3 dBmV |
41.7 dB |
1 |
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 |
2560 |
10400000 Hz |
53.8 dBmV |
| 2 |
Locked |
ATDMA |
2 |
5120 |
16400000 Hz |
53.5 dBmV |
| 3 |
Locked |
ATDMA |
3 |
5120 |
22800000 Hz |
54.8 dBmV |
| 4 |
Locked |
ATDMA |
4 |
5120 |
29200000 Hz |
56.3 dBmV |
| 5 |
Locked |
ATDMA |
5 |
5120 |
35600000 Hz |
57.0 dBmV |
| 6 |
Locked |
ATDMA |
6 |
2560 |
40400000 Hz |
55.0 dBmV |
| 7 |
Not Locked |
Unknown |
0 |
0 |
0 Hz |
0.0 dBmV |
| 8 |
Not Locked |
Unknown |
0 |
0 |
0 Hz |
0.0 dBmV |
|
|
|
| Downstream OFDM Channels |
| Channel |
Lock Status |
Profile ID |
Channel ID |
Frequency |
Power |
SNR / MER |
Active Subcarrier
Number Range |
Unerrored
Codewords |
Correctable
Codewords |
Uncorrectable
Codewords |
| 1 |
Locked |
0 ,1 ,2 ,3 |
48 |
850000000 Hz |
1.7 dBmV |
41.5 dB |
1108 ~ 2987 |
139018618 |
97409759 |
0 |
| 2 |
Not Locked |
0 |
0 |
0 Hz |
0 dBmV |
0.0 dB |
0 ~ 4095 |
0 |
0 |
0 |
|
Accepted Solution
BruceW
Gold Problem Solver
•
26.5K Messages
2 years ago
Many downstream channels have out of spec power levels and SNR (too low), and all of the upstream power levels are also out of spec (too high). The work that was done appears to have crippled your connection to Comcast's network.
If you want to troubleshoot this yourself, please see Internet Troubleshooting Tips. If you can't find the problem or you'd rather have Comcast take care of it and an employee does not respond to your message here, 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/. It's not likely they can fix the problem remotely. If not, 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 ($70-$100) 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.
Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. When you Comment on a post by scrolling down to "Comment on this post here...", I am notified of your response. But if you select Reply, I am NOT notified and may not be aware of your response.
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