Netgear CM1200 Modem (Question)

[Nuklear92]

Quick question, when the downstream light is blinking I read that it means it’s scanning for new channels. However, it’s been more than 24hs already that the Modem started blinking the light for Downstream. Will it stop blinking automatically or I need to manually reboot the modem?

Internet is working normally, just the light that’s blinking.

Could anyone with knowledge of this matter let me know why the scanning take this long or if that could be a sign of issue that I should call my ISP to let them know about it? 🤔

Thanks in advance.

[FURRYe38 · Accepted solution]

Have the ISP check the signal and line quality UP to the modem. 
Be sure there are not coax cable line splitters in the between the modem and ISP service box. 
Be sure your using good quality RG6 coax cable up to the modem. 

---

@Nuklear92 wrote:
By the way, I rebooted the Modem through there and the downstream light stopped blinking. However, I know it might do it again in the future. I just want to know if always have to manually reboot the router when that happens or if the light stops blinking automatically even though it was already 72hrs after it started blinking. 🤷‍♂️

---

[plemans]

Do you have a screen snip of your modems connections page and logs? That helps 

[Nuklear92]

Where do I find that?

[plemans]

when you first log into the cm1200, its the internet connection icon. 

[Nuklear92]

There you go, it’s all purely default. Should I enable or change anything within here?

[plemans]

I don't see anything posted

[Nuklear92]

Sorry, here: https://imgur.com/a/OlCUPyY

[Nuklear92]

By the way, I rebooted the Modem through there and the downstream light stopped blinking. However, I know it might do it again in the future. I just want to know if always have to manually reboot the router when that happens or if the light stops blinking automatically even though it was already 72hrs after it started blinking. 🤷‍♂️

[FURRYe38 · Accepted solution]

Have the ISP check the signal and line quality UP to the modem. 
Be sure there are not coax cable line splitters in the between the modem and ISP service box. 
Be sure your using good quality RG6 coax cable up to the modem. 

---

@Nuklear92 wrote:
By the way, I rebooted the Modem through there and the downstream light stopped blinking. However, I know it might do it again in the future. I just want to know if always have to manually reboot the router when that happens or if the light stops blinking automatically even though it was already 72hrs after it started blinking. 🤷‍♂️

---

[Hello1981]

What cable internet service do you guys have? I called spectrum here in California and they told me that I can’t use my own modem if Iam on gig speed.. I have always used my own cable modems. But I was surprised to hear that, she stated that gig service requires their modem ?

[plemans]

The only non-spectrum approved modem for gig service I can see is the CAX80 but its not released yet. 

https://www.spectrum.net/support/internet/compliant-modems-charter-network/