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The problem with the 6190 is that only one upstream is seen, have you noticed it ever go to 50+ for the upstream power? The CM1000-1AZNAS model is not compatible with Comcast. Have you tried reactivating using online activation. Just make sure that the old modem is powered off.
I did call the activation line. I've spent about 2-3 hours on 4 different calls. That's why I'm here on the forums. Yesterday the guy wanted to send someone on my dime since they can't see any of the modems.
As for the CM1000. The two that I tried to activate I was told by the comcast tech that Netgear said to return them since they are defective and come back tomorrow. So, both are gone. However below is the info for the one I'm returning today.
Looks like the Event log didn't want to attach, so here it is:
My SB6190 lost it's connection to xfinity a couple of weeks and after trying to re-activate it I settled with using my old SB6121 until this was resolved. I've recently connected the SB6190 back and get the following signal levels:
Hopefully someone can help me get the SB6190 activated and provisioned to the speeds I'm subscribed to. In the mean time want to keep using the SB6121.
I've attached the event log