My daughter-in-law just signed on with Comcast - has a new Arris modem model # SB6183 and a TP Link Router. Everything appears good except for the modem getting signal. Since speaking with someone at Comcast is next to impossible...and our local office has been shut down....is there anyway to get this resolved without a comcast guy showing up to look at it with a $70 charge? And yes, we have powered the modem on and off approximately 8 times today, disconnected the router, have router signal to the Roku tv....etc, etc.
It's in a 4 unit apartment building. The cable wire into the apartment seems good, but I can't be sure that it's connected at the pole. In the good ole days you could actually speak to someone on the phone that could verify signal to the unit.
More than likely you are correct. I know in the past, some (approved) modems I've had weren't recognized immediately, and the customer service folks did something on their end (over the phone while I gave them some info) to get them going. Hopefully, it's just a pole connection reattachment...this apartment has apparently had service in the past...Comcast is the only provider in town, so it was never a competitor's hook-up.