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Solved
CM1150V not "found" (?) by Xfinity using CM MAC address and Serial No.
Hello, My uncle just received a used CM1150V he won on eBay. I tried to help him to activate it by going through Xfinity app to have CSR call us. Xfinity CSR asked for and read back (to v...
Log into the modems web page at 192.168.100.1 with a PC, even with it disconnected from the ISP coax line. Navigate to the Advaced Tab/Advanced Home, there you can confirm the serial # and MAC address for sure.
Possible. Be sure the Modem is connected to the coax line and is online. Reset the modem by pressing the reset button for 10 seconds then release. Modem should be handshaking with the ISP services in the next minute or two.
Nothing NG or Forums can help with the modem activation. It's all done with the ISP.
EIther there is a mis-reading of the MAC address, possible mis-print of the MAC address, signal on the line is bad or CSR at ISP isn't correctly checking for the MAC address. Possible there maybe a problem with the modem as well. You might try a different CSR or higher level serivce support to see if they can find this or can connect to it.
Have the ISP check the signal and line quality UP to the modem.
Be sure there are no 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.
Factory reset the modem by pressing the rest button for 10 seconds then release,
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
IF any of this fails to get the modem working on the ISP, get it returned to the seller ASAP.