This is going to be a long post, but I hope to include as much information as possible in the hope that someone might have a potential solution or idea that could help.
I have recently moved into an older house (renting) with only one cable ISP. For the first few weeks or so (beginning of May), I didn't have any issues, but once the weather outside got hotter, my modem freezes up and I get constant T3 ranging errors. The modem remains frozen until I either power cycle it (which works rarely), or I either disconnect and reconnect the coax cable (which works 100% of the time). When the modem goes offline, I see that all the upstream bonded channels are offline, but one out of the eight downstream channels remains up, within specs of both downstream power as well as SNR.
As an aside, the internet overnight is very reliable and doesn't require a reset until about 9:00 AM the next morning, at which point the problems start getting worse until once again in the late evening, where it seems to get "better".
Once I get the modem working again, the uptime ranges from either a few seconds, to a few minutes, to even a few hours; I have to reconnect the modem about 20-25 times per day. Once I reconnect it, I can see that my Upstream power begins at a comfortable 44-46 dBmV, and rises until it reaches it's breaking point around 57 dBmV. Most of the time, this increase is gradual, but other times it seems like a spike and happens all at once. I also notice that my downstream levels fluctuate between -5 and 5, which is in spec but still fluctuating wildly every time that I reset the modem and gets even worse as my Upstream levels rise.
I am currently using a Cisco 3010 DOSIS 3.0 Modem and a Time Machine as the router. I have tried other modems ranging from the motorola surfboard, to the Zoom 5341j, as well as other routers and even hardline directly into the modem; none of which seem to make any discernable difference.
All of these problems have presented themselves as the temperature has reached well into the 90's and my A/C has been in overdrive. The techs that come out insist that it must be static electricity buildup from a faulty ground in the old house. I am no electrician, but if that were the case I would imagine that the downtime between modem freeze-ups would not range between 8 or so hours overnight to a few seconds during the day (even when I turn off the A/C).
The tech speculates that because there is a faulty ground (in his estimation) that the static is making it's way onto the coax cable to the ground that the ISP uses outside. I have actually removed the ground (both of them) myself from the cable outside and the problems persist.
Using a plug-in device it does appear that most of the outlets in the older home don't have a working ground, but the one that the modem/router is plugged into does. He recommended that I buy a UPS with a Automatic-Voltage Regulator, which I have done. The problems remain the same even using this. Using the software, I can see that there has been no "events" during these upstream power level rises, and that the conditioning of the voltage being supplied is "good" and the AVR does not need to condition it up or down. Could static build up on the coax and my AVR not register any difference on the power supplied?
As the title suggests, I am not sure where else to turn. The ISP has yet to do any maintenance on the line itself but has merely just poked around the drop and said the usual script of "well your signal levels look good". Any help, tips, or ideas would be much appreciated, thank you guys/gals again so much for your time.
I have recently moved into an older house (renting) with only one cable ISP. For the first few weeks or so (beginning of May), I didn't have any issues, but once the weather outside got hotter, my modem freezes up and I get constant T3 ranging errors. The modem remains frozen until I either power cycle it (which works rarely), or I either disconnect and reconnect the coax cable (which works 100% of the time). When the modem goes offline, I see that all the upstream bonded channels are offline, but one out of the eight downstream channels remains up, within specs of both downstream power as well as SNR.
As an aside, the internet overnight is very reliable and doesn't require a reset until about 9:00 AM the next morning, at which point the problems start getting worse until once again in the late evening, where it seems to get "better".
Once I get the modem working again, the uptime ranges from either a few seconds, to a few minutes, to even a few hours; I have to reconnect the modem about 20-25 times per day. Once I reconnect it, I can see that my Upstream power begins at a comfortable 44-46 dBmV, and rises until it reaches it's breaking point around 57 dBmV. Most of the time, this increase is gradual, but other times it seems like a spike and happens all at once. I also notice that my downstream levels fluctuate between -5 and 5, which is in spec but still fluctuating wildly every time that I reset the modem and gets even worse as my Upstream levels rise.
I am currently using a Cisco 3010 DOSIS 3.0 Modem and a Time Machine as the router. I have tried other modems ranging from the motorola surfboard, to the Zoom 5341j, as well as other routers and even hardline directly into the modem; none of which seem to make any discernable difference.
All of these problems have presented themselves as the temperature has reached well into the 90's and my A/C has been in overdrive. The techs that come out insist that it must be static electricity buildup from a faulty ground in the old house. I am no electrician, but if that were the case I would imagine that the downtime between modem freeze-ups would not range between 8 or so hours overnight to a few seconds during the day (even when I turn off the A/C).
The tech speculates that because there is a faulty ground (in his estimation) that the static is making it's way onto the coax cable to the ground that the ISP uses outside. I have actually removed the ground (both of them) myself from the cable outside and the problems persist.
Using a plug-in device it does appear that most of the outlets in the older home don't have a working ground, but the one that the modem/router is plugged into does. He recommended that I buy a UPS with a Automatic-Voltage Regulator, which I have done. The problems remain the same even using this. Using the software, I can see that there has been no "events" during these upstream power level rises, and that the conditioning of the voltage being supplied is "good" and the AVR does not need to condition it up or down. Could static build up on the coax and my AVR not register any difference on the power supplied?
As the title suggests, I am not sure where else to turn. The ISP has yet to do any maintenance on the line itself but has merely just poked around the drop and said the usual script of "well your signal levels look good". Any help, tips, or ideas would be much appreciated, thank you guys/gals again so much for your time.
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