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Forum Discussion

bv24's avatar
bv24
Follower
Aug 14, 2020

Model CM1200 - The downstream lightening bolt keeps flashin

I have turned off/on my Netgear CM1200 modem a number of times and the downstream lightening bolt continues to flash (green light) and I am having connectivity problems. How can I solve this issue?

1 Reply

  • FURRYe38's avatar
    FURRYe38
    Guru - Experienced User
    Aug 17, 2020

    Have the ISP check the signal and line quality UP to the modem. 

    Have the ISP re-send the configuration file after a factory reset. 
    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.