Visitor
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2 Messages
Modem issues: Lost MDD Timeout, RCS Partial Service, SYNC Timing Synchronization failure - Loss of Sync, No Ranging Response received - T3
Hello, paying for the 800mbps plan, getting 6 and have to reset my router 5-7 times a day. Modem is throwing a lot of errors, not the best at debugging this sort of thing so I would appreciate any insight that could lead to a solution!
Modem / Router: Arris SBG10
Down / Up status:
Logs:
If more information is needed let me know!
EG
Expert
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110.1K Messages
4 years ago
The SNR is too low / out of spec on some of the downstream channels. Seems that there is noise ingress leaking into the line somewhere. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the un-bonding of channels.
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, 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 !
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user_RobertB
Contributor
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350 Messages
4 years ago
@Bferrell16
Hi there! I'd be glad to ensure that this gets looked into further. Please send a private message with your name, the complete service address (including city, state, ZIP, suite number, etc), and the phone or account number, and any pertinent details-- like the ticket number(s)-- so we can help. You can do this by clicking on the icon in the upper right corner of their screen and send a message to the shared handle "Xfinity Support"
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EG
Expert
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110.1K Messages
4 years ago
@Bferrell16
Have you had a chance to try any of the troubleshooting tips that I provided yet ? If so, please post the outcome right here on the open / public forums. Thank you.
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