What do the modem's signal stats look like ? Try getting them here http://192.168.100.1 or here http://10.0.0.1
Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.
Thank you for your attention.
So I took my Netgear modem to my mother's house and it worked perfectly. No messages in the event log even after wating about 10 minutes. The only thing that was different was her coaxial cable and of course the wiring at her house. Bringing it back to my house again I get the same issue of the upstream light blinking which leads me to believe there is an issue with my coaxial cable and or house wiring. I do not believe there is an issue with the modem itself as it worked perfectly at a different residence. I will post the information you requested
This is from the Surfboard sbg6580
I will look forward to further feedback as to what I can do.