@mdfriendly I'm not entirely sure what to make of these stats because they look odd.
The Downstream SNR and Power Levels are within spec but looking across all channels, the power levels range from -4.3 dBmV to 5.9 dBmV.
Your modem is also outputting a higher than normal power level upstream, something that I would not expect to see given that your modem is seeing strong downstream power levels... unless perhaps they have an amplifier installed to boost the signal to your home. You also have an upstream OFDM channel enabled with a totally bogus power level displayed.
As for your error stats, your Uncorrectable Codewords count ideally should be zero across the board, and your downstream OFDM channel definitely should be close to zero, not 6116517. Your modem should be using the downstream OFDM channel but I don't know at what point (or if) it would switch from DOCSIS 3.1 to D3.0 mode.
The other thing I don't understand is why the error count is so high, across all channels, yet your SNR stats don't reflect a lot of noise. Do these error counts ever remain stable or are they constantly increasing?
I would send a private message to @CommunityHelps and them to check the stats on your local node.
I can't tell you whether your modem needs to be replaced or not, or whether there are signal problems in your area. Rogers can validate everything by looking at the local node and by looking at your neighbours' stats. Without information as to what the Rogers techs and maintenance crews have been doing in your area to try to fix your issues, I cannot provide you with an informed opinion on what the next steps should be.
Yup, its a mystery alright. The downstream Docsis 3.0 levels have a wide range, but, taken individually, their in spec. I'd like to see no more than a 2 to 3 dB range, centered around 0 dBmV, personal opinion of course. The signal to noise ratios are really good, so that doesn't jive with the high uncorrected code words. So, one of the problems here, as @-G- indicated, we don't know if the modem is using the OFDM downstream channel only, or if its running in a mixed mode, using both Docsis 3.0 QAM channels and Docsis 3.0 OFDM channel sub-carriers. We don't have any visibility into the sub-carrier signal levels and signal to noise ratios, so, you would have to send a message to @CommunityHelps to have one of the moderators check the OFDM MIBS. Tech support doesn't have access to that data, but the moderators should. If that check comes back ok, then there's another issue afoot somewhere else. That codeword error count would be looking at the total sum of codewords as transmitted to the modem from the Cable Modem Termination System. There are multiple components along the way that could be causing a problem, with the modem being the last device in the chain. I don't believe that you have a modem problem. Historically, the modem failure rate is very low, but, for whatever reason, tech support and the field techs seem to push modem replacements as the cure-all.
So, questions of the day:
1. Is your external cabling overhead or underground? I'm
2. Do you know when that cabling was changed or installed?
3. Did the tech remove all of the splitters, or, is there still one or two splitters still present in the junction between the external cable and the internal cable? A remaining splitter would explain the elevated upstream levels.
I think the techs should be looking at your neighbours data to see if the situation is a "one of", as in yours, or if the same problem can be seen with the immediate neighbours modems as well, which points to the local tap or further upstream. I don't think there's any point in doing anything without checking that data first. If this is your problem only, then it points to a nearby noise source, despite the signal to noise ratios, to a degraded cable, and lastly the remote possibility of a failing modem (which I don't believe, but its possible).
fwiw, my two cents.....
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