Visitor
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6 Messages
Downstream Icon on Motorola MB8611 Modem Keeps Blinking
Hello,
I have an Xfinity approved modem (Motorola MB8611) and the downstream light continuously blinks. The interesting thing is that none of my home internet is impacted and have not been seeing loss of connectivity. The workaround is to power cycle the modem, which clears up the DS light blinking but then it comes back after about 24 hours.
Unsure if this has anything to do with it but this is my home setup. In my outside control box, the coax line coming from the street is connected to a POE Filter, which is connected to a Digital ONN 4 way splitter (5-2500 mhz). The 4 way splitter has coax lines connected to all four ports because we have MOCA adapters (Ethernet over coax) installed in our home because some areas I would prefer hard wire connectivity rather than Wi-fi.
For the coax line coming into the house, the line coming from the wall is connected to a digital two way ONN Splitter IN (5-2500 MHz). On the OUT connections of the two way splitter, one coax line is connected to the cable modem, while the other coax line is connected to the Motorola 2.5 MOCA adapter.
The internet is working just fine - no drops, no connection issues. I do not have any cable box equipment through Xfinity because we stream everything. But when I see the down stream light blinking, it raises slight concern which is why I am reaching out. Any suggestions on how to eliminate this once and for all?
Below are my down stream levels
Thank you.
user_Jh90
Visitor
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6 Messages
3 years ago
What is interesting is when I contacted Xfinity about this, they told me that they would have to send a refresh signal to my device. When I asked what the difference was between sending a refresh signal to modem and power cycling it, they said “it is the same thing”. Mind you, I have to power cycle the modem every time to clear up the DS light blinking so my phone conversation with them was just a waste of time.
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user_Jh90
Visitor
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6 Messages
3 years ago
Lastly, I had seen somewhere that connecting a 10 DB anneutator pad directly to the modem and running the coax line to it should resolve the issue but wasn’t too sure. This is the anneautator that another forum online recommended.
https://www.amazon.com/10-DB-Attenuator-Pad-Each/dp/B0013L56OK/ref=sr_1_9?crid=2MDUAAVQHAWNN&keywords=10db+attenuator&qid=1662946590&sprefix=10+db+a%2Caps%2C82&sr=8-9
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EG
Expert
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110.1K Messages
3 years ago
No. Don't use an attenuator pad. The downstream power levels are already too low / way out of spec ! The excess line attenuation needs to be ELIMINATED, not added to. Some of those splits are going to have to go, and / or a drop amplifier will need to be installed on the coax line.
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user_Jh90
Visitor
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6 Messages
3 years ago
Thanks! Do you have any drop amplifier recommendations? I can eliminate the two way splitter but will definitely need the four way splitter where the line comes in from the street because of my Moca setup.
(edited)
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EG
Expert
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110.1K Messages
3 years ago
First. Please also post the upstream power level numbers.
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user_Jh90
Visitor
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6 Messages
3 years ago
Here are the upstream levels
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EG
Expert
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110.1K Messages
3 years ago
Those are high to out of spec as well. I'm surprised that you are not having any connectivity issues with those power level values ! Are you certain that you want to spend money on an amp that you may not need since you are not actually having problems, and only the indicator light is your concern ?
If so, you could try using this one: https://www.amazon.com/Active-Return-5-Port-Amplifier-PPC-5M-U/dp/B086R3HCF2 No guarantees / YMMV.
Using an amp should really be done only as a last resort. The excessive line attenuation really should be corrected using physical means to improve the connection quality. If no further improvement can be made by you then you may want to consider having a tech out to investigate what it needed. The problem may be on their end, and if it is there will not be any charge for the visit. And if they determine that an amp is what's needed, they will supply it at no cost to you. Good luck !
(edited)
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