Frequent Visitor
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5 Messages
Downstream issues (Southeast PA) - Netgear CM2050v - Multi-Gigabit Modem w/ Phone
Hi all. Having both Comcast internet and TV issues. The internet connection has been spotty, at best. Furthermore, the last 2 days, on the cable TV box, there was a "low bar" icon. Called Comcast. The tech sent some signals, did whatever magic, and that low bar is gone. HOWEVER, the internet is still an issue.
I have a Netgear CM2050v modem w/ phone service. I've been regularly getting DOWN speeds of only 10 Mbps (1.25 MegaBYTES/sec) for the Gigabit package (so, should be in the range of 600+ Mbps). It fluctuates. Some good, some bad days. Called and spoke to another Comcast tech who, after - apparently - running several diagnostics, said everything was fine. I don't believe her for a second. The "Downstream" icon on the modem is flashing on/off (while all the other lights are solid). Also, this was after I powered down the modem, reset it. So, that's typically fine the first few hours, or days. However, the issue persists on the long-run.
I have my log file handy. I don't understand the #'s nor the meaning behind them. Hoping someone can shed some light. I wonder if the issue is the outside cables, perhaps (birds, squirrels)?
Rockymaru
Frequent Visitor
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5 Messages
2 years ago
Log file:
Number Range
Codewords
Codewords
Codewords
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EG
Expert
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110.2K Messages
2 years ago
Both the downstream and the upstream power levels are or are nearly out of spec. 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 / more wiggle room, 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 !
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