Could you let me know if you're experiencing a slow or intermittent internet connection?

If the upstream channel signals are out of range, I recommend contacting your internet service provider and asking them to adjust the signal levels or reprovision the modem.

Thanks for the reply.

Internet has been intermittent. Had to move the modem’s cable source from the passive -4dbm cable amp port to one of the amplified ports to get the modem to connect.

Cable tech is coming today.

If thats the current power after removing the amp, your connection is wrong. You should be within 3.5dbmv on the downstream power levels. You’re going from -1.3 to a 4.5dbmv. So a 5.8dbmv difference. And based on where your downstream power levels are, your upstream is incredibly low. Usually where your downstream levels are at, we’d expect you upstream to be 45-50dbmv. But you’re much lower. 

so if thats the levels you’re currently at and have no splitters/amplifiers in line, the isp would probably need to check it. 

Thanks for the info.

Comcast blew me off yesterday and rescheduled for tomorrow, 1/3.

As stated above, I had to switch the modem source from the -4dbm passive port on the cable amp to one of the amplified ports to get the modem to connect. Even then, I only get the 2 higher freq. upstream channels in the high 30’s. However, in the last day those 2 upstream channels have moved into the low 50’s with a downstream between 1.2 and 5.9 with no service interruptions.

I’ll see what the Xholes have to say if they show up tomorrow.

I’d remove the amp entirely and move the modem to right where the coax comes into the house. That should give you the best signal. If its not working there, theres issues with the incoming line. An amp isn’t recommended with internet connections as they can distort the signal. 

Understood but until comcast fixes their issues, it’s the only way I get a connection and still have cable TV. I tried connecting the modem direct a few days ago and that worked about as well as going through the cable amp (PPC EVO1-9-U/U) but at least this way I still have cable TV.

so comcast showed up, did some work at the street junction box, and replaced the cable amp with a -5dbm, 3 way, 5-1002 MHz splitter:

I complained about the low upstream power so he took another look at the street junction box and put in a ticket for some rework.

For now, things seem to be working OK.

I understand that the ISP visited in person and replaced the cables. However, the upstream power level is still out of range and should be greater than 45 dBmV.

If the issue continues in the future, I recommend visiting www.arris.com/consumersupport  for further assistance.

http://www.arris.com/consumersupport

just redirects to

https://arris.my.salesforce-sites.com/consumers

which is how I got here in the first place..

Visit www.arris.com/consumersupport and scroll down the page to find the "Call" or "Live Chat" option to contact Arris technical support for further assistance.