Netgear CM700

[ZackAttack]

Hi,

I had my netgear CM700 modem for about a year or two and now it is starting to give off problems. I have noticed at random times that it gets hot where it just can't handle what it is made for. Another thing I notice is that the channel bonds seem to be way out of place for the correctables and uncorrectables. Does anyone have any ideas? It is in the living where there is a ton of circulative air for the modem to breath.

[Anonymous]

The Netgear Genie app is out of date and they are pushing their Nighthawk app.  Try updating the firmware if you're really wanting to get the most out of that modem and see if that one will connect to their other app.

[wasCB14]

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@Anonymous wrote:

The Netgear Genie app is out of date and they are pushing their Nighthawk app.  Try updating the firmware if you're really wanting to get the most out of that modem and see if that one will connect to their other app.

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I set up a new modem (AC1750) a few months ago. All the documentation included in the box talked about using the Genie app, which led me to waste a lot of time trying to get running before I learned about the Nighthawk app that was much easier to use. I think Genie support had either been discontinued by that time or was totally incompatible with my modem.

Not sure about CM700, though.

[Anonymous]

Hmm... Your SNR is low... Have you tried unscrewing the coax and screwing it back on tightly? Over time they can wiggle themselves loose and cause signal leakage which causes problems with your connection. Ideally you want SNR to be 35 and up for DOCSIS 3.0 with 256 QAM modulation. Since your channels are also back to back running from 579MHz to 621MHz with issues and the higher the frequency, the more attenuation (signal loss), it would seem that you have a wiring issue somewhere. If unscrewing it and screwing it back in doesn't work, try another RG6 coax cable (you can get a good one free from the Xfinity store if you need one). If that doesn't work, you'll need to check for splitters on the line and remove/replace them.

If that doesn't work, you'll need a tech to come out and check the line.

[Brian_Earl_Spilner]

Or you can replace it with an Arris surfboard cause Netgear is trash.

[Anonymous]

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@Brian_Earl_Spilner wrote:

Or you can replace it with an Arris surfboard cause Netgear is trash.

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Surfboard is trash too. They use garbage Intel modems. 

Best modem to get is this one. https://www.amazon.com/MOTOROLA-Approved-Comcast-Gigablast-MB8600/dp/B0723599RQ/ 

Of course the modem is very likely not the issue here which is why I didn't recommend a new modem right off the bat. It's clearly a signal issue, likely down to either a bad splitter on the line or coax somewhere along the way, whether it be a loose connection or damaged cable. 

[coldfusion]

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@Anonymous wrote:

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@Brian_Earl_Spilner wrote:

Or you can replace it with an Arris surfboard cause Netgear is trash.

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Surfboard is trash too. They use garbage Intel modems. 

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The SB6190 does but the SB8200 uses the same Broadcom chipset as the MB8600.  I'd still go with the Motorola if my provider gave me the option.

I'd agree that there's a good chance there is a physical cabling issue like squirrels chewing, moisture seepage,  etc.  Worth a service call to get a tech to check at the demarc and troubleshoot back to find the source.

[Anonymous]

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@coldfusion wrote:

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@Anonymous wrote:

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@Brian_Earl_Spilner wrote:

Or you can replace it with an Arris surfboard cause Netgear is trash.

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Surfboard is trash too. They use garbage Intel modems. 

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The SB6190 does but the SB8200 uses the same Broadcom chipset as the MB8600.  I'd still go with the Motorola if my provider gave me the option.

I'd agree that there's a good chance there is a physical cabling issue like squirrels chewing, moisture seepage,  etc.  Worth a service call to get a tech to check at the demarc and troubleshoot back to find the source.

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Yeah I tend to act like the SB8200 doesn't even exist because it's an overheating dumpster fire. I cannot stand Arris if you didn't catch that. I actually bought my MB8600 so I could get rid of the Arris XB6 gateway that I had which had the Puma chip and caused latency spikes from day one in addition to having a whiny fan that was so loud it actually woke me up in the middle of the night when my roommate was streaming. 

Anyway, hopefully OP gets it figured out. As long as it's not the drop, it shouldn't be a big deal to fix. 

[FireMedic1]

Genie is/was a waste. Just go directly to routerlogin.net and sign in directly. Still says Genie. But it isnt a downloaded program.