P2
Newcomer

Re: Modem keeps rebooting.

Have a technician coming  out tomorrow.  And I hope this is all fixed. Smiley Happy 

P2
P2
Newcomer

Re: Modem keeps rebooting.

The cable man let me know it's all the lines going to the Apt's and there is not a lot that he can do to fix it. He says this place needs all new lines put in and the city that owns this places will have to pay them to do so. And he says they are never going to do that at all. He put in a new cable modem after he seen the one that I have was rebooting. He got to see it do it. This new modem has not yet rebooted. This is the 2nd modem this week. The good news is it not at all like the other ones was. So maybe this did fix it after all.

P2
Expert

Re: Modem keeps rebooting.

post the new modems signal level pages, let's see if it's any different from the old one.

Are you in a building with external lines to each suite?

Can you take a photo of the box they all run into?

 

P2
Newcomer

Re: Modem keeps rebooting.

I am in a 10 floor high rise  on the 8th floor.  The cables go up  to ea suite from a room on the 1st floor.  They are not running inside  the wall. They are coming up from the floor in a bathroom closet.  And by the look of it the cable lines was put in after they built this place in 1975. So if they wanted to they can run new lines. It  just be a lot of work, cost, and time to do so.  I have no access to that room to take a photo. Downstream

 DCIDFreqPowerSNRModulationOctetsCorrectedsUncorrectables
Downstream 124711.00 MHz5.00 dBmV38.61 dB256QAM14550147920
Downstream 210627.00 MHz7.20 dBmV40.95 dB256QAM5295590290
Downstream 311633.00 MHz6.40 dBmV40.37 dB256QAM5240393840
Downstream 412639.00 MHz6.00 dBmV40.95 dB256QAM5315670000
Downstream 513645.00 MHz6.30 dBmV40.37 dB256QAM5122069820
Downstream 614651.00 MHz6.80 dBmV40.37 dB256QAM5297085300
Downstream 715657.00 MHz6.70 dBmV40.95 dB256QAM5130103500
Downstream 816663.00 MHz6.50 dBmV40.37 dB256QAM5222829800
Downstream 917669.00 MHz6.50 dBmV40.37 dB256QAM5207595660
Downstream 1018675.00 MHz6.10 dBmV40.37 dB256QAM5245069650
Downstream 1119681.00 MHz5.90 dBmV40.37 dB256QAM5305279290
Downstream 1220687.00 MHz6.30 dBmV38.98 dB256QAM5271413460
Downstream 1321693.00 MHz6.30 dBmV40.37 dB256QAM5213711940
Downstream 1422699.00 MHz5.60 dBmV38.98 dB256QAM5211957500
Downstream 1523705.00 MHz4.80 dBmV38.98 dB256QAM5337203310
Downstream 169621.00 MHz6.60 dBmV40.37 dB256QAM53519742180

 

Upstream

 UCIDFreqPowerChannel TypeSymbol RateModulation
Upstream 1224.20 MHz44.00 dBmVDOCSIS2.0 (ATDMA)5120 kSym/s64QAM
Upstream 2437.00 MHz42.75 dBmVDOCSIS2.0 (ATDMA)5120 kSym/s64QAM
Upstream 3330.60 MHz43.25 dBmVDOCSIS2.0 (ATDMA)5120 kSym/s64QAM
Upstream 4119.40 MHz44.25 dBmVDOCSIS1.x (TDMA)2560 kSym/s16QAM
P2
P2
Newcomer

Re: Modem keeps rebooting.

OK after I posted last time my upstream was back down to just one channel and the power was up to 57 dBmV. 

I rebooted the modem and it be OK and boom back to one channel on the upstream and high power.

I just happen to look in the back of my computer setup and seen that I had a orange outdoor extension cord that going in to a power bar surge protector on top of my desk that i had my phone, tablet, and a laptop on. (Note: the modem was not on this.)

I never did think it was the extension cord doing this at all. I just did not what it there.

So I removed the extension cord and reset up the power bar surge protector so I can just plug it in to a wall outlet. I do not know why it was not setup in that way to start with. 

After I did this I rebooted the modemto see if I can get the power down on the upstream.

And it came back up with all 4 upstream  and very good power for the upstream and downstream. And has been that way from that time. No reboots no slow net.

Just working very good.  So it was the extension cord all this time. Hmmm??

OK this is a new one on me. But how?

P2
Highlighted
Expert

Re: Modem keeps rebooting.

May have been a bad or noisy ground connection . That can induce noise.. But, I'll bet there is indeed a building issue

APT's are horrible witth all sorts of ground loop issues.