Online and Phone are no longer lit on the modem. Resetting the modem usually (not always) gets it working again but It will just occur again within another 30 min or so (sometimes later) and will keep messing up till it decides to stop. This usually occurs late in the evening and happens almost every day. So I can fix it temporarily but why is it happening. I haven't had a tech come out yet. I think it may be an issue with the cable or possibly the amplifier in the attic. Edit*- just so happens it occured as i was typing this post and didn't come back on for a couple hours. This time the online and phone lights were out but every few minutes the online light would start flashing like it was trying to come on but would just turn back off. this process repeated till i just flipped the power switch on the strip outlet and it happen to come back online.
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We need more information please:
- Post your upstream and downstream signal levels. Click the link or type: http://192.168.100.1 or http://10.0.0.1 into your browser. We are interested in your power levels (dBmV) and your Signal to Noise Ratio (SNR). You may also want to contact Comcast and ask for your upstream SNR (uSNR) and receive level.
- Post your modem’s error logs.
- Post the make and model of your modem.
- Post the make and model of your router if you have one.
- Let us know if you contacted Comcast or had a tech visit.
- Let us know what the lights on your modem are doing when you are having problems.
- If you have already posted some of this information, you don't need to post it again.
The first link doesn't work , the second one takes me to a login page but it tells me the username and pass don't match even though i know it's right. I can log in normally elsewhere but not through that link you posted.
StayFunny wrote: ... it tells me the username and pass don't match ...
Unless they've been changed, the Username is "admin" and the Password is "password". See http://customer.comcast.com/help-and-support/internet/about-the-wireless-gateway
Also the security logs show a couple things marked Critical when it was having issues last night-
Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=8c:04:ff:39:7c:0e;CMTS-MAC=c4:71:fe:76:90:3d;CM-QOS=1.1;CM-VER=3.0;
Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=8c:04:ff:39:7c:0e;CMTS-MAC=c4:71:fe:76:90:3d;CM-QOS=1.1;CM-VER=3.0;
also are a couple SYNC Timing Synchronization failures in there as well. And one marked Warning pops up several times --Dynamic Range Window violation
These are repeated throughout the log if that means anything.
Well there's your problem, your signal is lousy. Usually this is caused by too many splitters or bad/substandard wiring. It's possible it is a Comcast issue, but most likely the problem exists between the tap (pole) and your modem.
Is the is a recent install? Have you made any changes lately? How old is the wiring?
Only change made within the last few years was getting the new modem when comcast boosted their speeds. Other than that I'd say the wiring is fairly old and this issue has occured on the old modem as well. So I should probably get a tech out here to check it out?
Yep. If you are worried about the bill, get the Service Protection Plan for $5/month, you only have to keep it for two months. So you can get all the wiring fixed for $10. You can sign up when you call in.
1-800-COMCAST (1-800-266-2278) or 1-800-XFINITY (1-800-934-6489)