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Visitor

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8 Messages

Sunday, October 16th, 2022 6:16 PM

Closed

can't get modem to connect docsis 3.1....slow downloads

I'm getting only about 70mbs down, 10 mbs up.....my package is for 300 down.

my arris modem  sb8200 shows green lights, and a very occasional flashing blue on the download light....but mostly green

my download power ranges from -9 to -24 dBmV and SNR range between 34-26

are these numbers within spec?

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Expert

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108.3K Messages

2 years ago

Please copy all of the text in its entirety of the *Downstream Power Levels*, the *SNR's* (Signal to Noise Ratios), and the *Upstream Power Level* numbers and paste them into your next post.

Visitor

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8 Messages

2 years ago

here is the modem output page 1

Visitor

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8 Messages

@user_6aa120

and here is the second page

Expert

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108.3K Messages

2 years ago

The downstream values are horrible ! I'm surprised that you're even able to get online.

In an effort to try to obtain better connectivity, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1000 MHz, bi-directional, and no gold colored garbage from Radio Shack, Home Depot, Target, etc. Splitters should be swapped with known to be good / new ones to test.

Also check the coax cable for any damage such as cuts, nicks, abrasions, kinks, sharp bends, etc.

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two-way splitter connected directly off of the drop from the street / pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.


Good luck with it !

Visitor

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8 Messages

@EG​ haha....the landscaper hit the cable when digging in the yard...supposedly he fixed it!  guess we know how that went...

Visitor

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8 Messages

ps, is there an easy way to book a tech visit other than going thru all the phone menus??  seems like it takes forever to talk to a person...

Problem Solver

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606 Messages

 

@user_6aa120 I would like to assist you with you service issues caused by the cut line.

Can you send us a direct message.

To send a direct message:

Click "Sign In" if necessary

• Click the "Direct messaging" icon near the top right of the page

• Click the "New message" (pencil and paper) icon

• Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which appears. The "Xfinity Support" graphic replaces the "To:" line

• Type your message in the text area near the bottom of the window

• Press Enter to send it

 

I no longer work for Comcast.

Visitor

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8 Messages

appreciate your response.

i sent a DM, haven't heard back at this point...

Expert

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108.3K Messages

2 years ago

@user_6aa120 

Sorry to hear that. I'll see if I can get an official employee to respond to you here in your topic.

Visitor

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8 Messages

@EG​ appreciate your assistance

Expert

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108.3K Messages

@user_6aa120​ 

My pleasure !! Please post back here with how things turn out.

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.

Was your question answered? Please mark an Accepted Answer!tick

Visitor

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8 Messages

i did try to report the issue on the xfinity app on my phone....i can tell you its an exercise in futility trying to use that app for scheduling a tech visit...who ever wrote that app has a sick sense of humor...

Problem Solver

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606 Messages

Thank you for sending the DM as requested we want to get you private info here for your protection. I will need to get some basic info to fully verify and allow me to fully access your account. Please provide your full name and the full service address?

I no longer work for Comcast.

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