Hello forum. I have an issue I was hoping you guys could help me with before I contact Charter to see if I can isolate the problem. A few months ago I noticed every now and again my upstream power levels would spike from around 44db to way out of spec 60db causing the modem to reset. It would then come back a few minutes later and all was well. This happened MAYBE once a month the past 3 months. It happened again last Sunday and a storm rolled through Thursday that knocked a tree on my lines that tore the power/cable lines down about 100 feet from my house(past the tap on the main lines). I surprisingly somehow kept cable service and nothing changed. Anyways, yesterday the problem came back and did itself multiple times throughout the day which is the first time I've seen an intermittent issue like that. I should also note that my TV was out when this happened and it's on a separate line and this is the first time it did it. The phone went out too which is on the same splitter as the TV so it's definitely a problem outside. My downstream levels are flawless in both SNR and power levels. They're nearly perfect. The upstream is the problem. It will spike out of spec then calm itself down and go back to around 44db slowly which is where Charter wants.
My question is what are some common issues with this problem? When it comes back everything is flawless. My internet is flatlined when I run speed tests and the downstream is always in perfect levels. My modem, splitter outside and lines are only a little over a year old. However, the underground wire that's from the tap and drop is about 8 years old. That's the only thing that hasn't been replaced near my house in awhile.
I can post my signal levels right now but generally this is what they are all the time until the upstream power spikes(even then the downstream doesn't change).
Downstream Channels
Power Level: Signal to Noise Ratio:
Channel 1: -1.6 dBmV 38.7 dB
Channel 2: -1.4 dBmV 38.7 dB
Channel 3: -1.5 dBmV 38.7 dB
Channel 4: -1.4 dBmV 38.7 dB
Channel 5: -1.4 dBmV 38.6 dB
Channel 6: -1.3 dBmV 38.7 dB
Channel 7: -1.4 dBmV 38.4 dB
Channel 8: -1.2 dBmV 38.8 dB
Channel 9: -1.3 dBmV 38.7 dB
Channel 10: -1.2 dBmV 38.7 dB
Channel 11: -1.4 dBmV 38.6 dB
Channel 12: -1.4 dBmV 38.7 dB
Channel 13: -1.5 dBmV 38.0 dB
Channel 14: -1.6 dBmV 38.6 dB
Channel 15: -1.6 dBmV 38.6 dB
Channel 16: -1.6 dBmV 38.6 dB
My SNR on downstream will sometimes hit 40db but this is the low point for it
Upstream Channels
Power Level:
Channel 1: 44.8 dBmV
Channel 2: 0.0 dBmV
Channel 3: 0.0 dBmV
Channel 4: 0.0 dBmV
I can't post SNR for upstream as my modem doesn't list it. Thoughts? I was wondering if the underground wire that runs to my first splitter outside could be the cause for these high spikes? It's really the only old anything here since it's about 8-years-old while everything else is a little over a year old. I figure it's either that or malfunctioning equipment down my road somewhere.
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