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Forum Discussion
CM1200 Modem Upstream LED Flashing - Spectrum Internet
I've had this modem for just over a year and it started dropping signal a couple days ago. The upstream LED was flashing green so I had a tech from Spectrum come out and check on everything. They pro...
The "power" box is right outside the window from the modem, so the cable run is pretty short. I'm not sure if there is amp or not though. I will try giving the checkbox a try.
Thank you!
You are the victim of OFDMA being enabled on the upload channels. Modem running 1.02.01 breaks when OFDMA is enabled. You can read my journey here. https://www.dslreports.com/forum/r32832397-Netgear-CM1200-is-now-crap-OFDMA-just-enabled-on-upstream
I read through your post, and one year later seems like the same issue is happening. Is the only recourse to buy another modem?!!? This one is slightly over a year old only just started having issues. Still running the same firmware too. Like OP I've had 3 tech visits, swapped out lines, added/removed/added again amplifier. But constant issues. ISP said maybe an issues with a Node, but to be honest I don't know what that means. I was given the number to the supervisor directly for updates, but I'll let you guess how many times I've spoken to him.
I'll take any/all suggestions, tips, magic enchament spells.. what ever you got.
My specs if anyone cares to take a look.