What could be causing the constant SH3 reboots?
11-04-2019, 21:32
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#1
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Inactive
Join Date: Dec 2008
Posts: 116
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What could be causing the constant SH3 reboots?
It's in modem mode and the log doesn't show anything specific but its behaving exactly like it was during the beta test where it would just reboot in modem mode but be absolutely fine in router mode. However, now even changing to router mode doesn't help. Have done a factory reset, tried different devices, removed my 3rd party router to no avail. An engineer is scheduled early next week but it's still annoying 
Code:
Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1 299000000 -1.4 40 256 qam 21
2 139000000 -0.2 40 256 qam 1
3 147000000 -0.2 40 256 qam 2
4 155000000 -0.5 40 256 qam 3
5 163000000 -0.7 40 256 qam 4
6 171000000 -0.7 40 256 qam 5
7 179000000 -0.5 40 256 qam 6
8 187000000 -0.7 40 256 qam 7
9 195000000 -1 40 256 qam 8
10 203000000 -1.2 40 256 qam 9
11 211000000 -1.5 40 256 qam 10
12 219000000 -1.5 40 256 qam 11
13 227000000 -1.5 40 256 qam 12
14 235000000 -1.5 40 256 qam 13
15 243000000 -1.4 40 256 qam 14
16 251000000 -1.4 40 256 qam 15
17 259000000 -1.5 40 256 qam 16
18 267000000 -1.5 40 256 qam 17
19 275000000 -1.7 40 256 qam 18
20 283000000 -1.5 40 256 qam 19
21 291000000 -1.9 40 256 qam 20
22 307000000 -1.4 40 256 qam 22
23 315000000 -1 40 256 qam 23
24 323000000 -1 40 256 qam 24
Code:
Upstream bonded channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 39399996 5.796 5120 16 qam 10
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11-04-2019, 22:34
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#2
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cf.geek
Join Date: Mar 2004
Services: Tivo V6 - L TV/XL Phone /200Mb BB
Posts: 896
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Re: What could be causing the constant SH3 reboots?
Only one upstream which is way out of spec, outside help needed nothing you can do!
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11-04-2019, 22:59
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#3
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CF Resident Dog
Join Date: Mar 2005
Posts: 14,254
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Re: What could be causing the constant SH3 reboots?
And the upstream power level is high at 57.9.
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PSN: Snoopzster
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11-04-2019, 23:55
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#4
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Inactive
Join Date: Dec 2008
Posts: 116
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Re: What could be causing the constant SH3 reboots?
Ah. Thanks I guess I will sit tight for the engineer
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12-04-2019, 11:32
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#5
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Ran Away
Join Date: Nov 2008
Location: Lincoln
Services: phone + 1gbit BB + SkyQ
Posts: 11,021
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Re: What could be causing the constant SH3 reboots?
yeah, big problems on the upstream and the shub will keep resetting the connection trying to fix it. Tbh it isn't going to be a shub fault, it is going to be an area fault. Don't be surprised if the engineer doesn't some and/or they let you know the appointment is cancelled because once he has been to a couple of houses and realises what the problem is he will escalate it to networks who will get it fixed and cancel all subsequent call outs.
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12-04-2019, 12:11
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#6
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Inactive
Join Date: Dec 2008
Posts: 116
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Re: What could be causing the constant SH3 reboots?
I've paused all the uploading going on in the house and it seems to be more stable, just hoping it gets through streaming Game of Thrones on Sunday OK!
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12-04-2019, 12:27
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#7
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Ran Away
Join Date: Nov 2008
Location: Lincoln
Services: phone + 1gbit BB + SkyQ
Posts: 11,021
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Re: What could be causing the constant SH3 reboots?
Quote:
Originally Posted by apb27
just hoping it gets through streaming Game of Thrones on Sunday OK!
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I hate to be a spoil sport but i dont think it will. You can only hope that enough people ring in and they realise it us an area fault and they fix it today or this weekend. If you keep an eye on the service status page you'll see when they have picked up on the problem.
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15-04-2019, 07:16
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#8
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Sulking in the Corner
Join Date: Jul 2009
Location: RG41
Services: 1 Gbps; Hub 4 MM; ASUS RT-AX88U; Ultimate VOLT. BT Infinity2; Devolo 1200AV
Posts: 11,955
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Re: What could be causing the constant SH3 reboots?
Mon General is absolutely correct. There is an upstream issue, likely to be locality wide causing your modem to reset when the power level reaches its maximum threshold. You could check with your neighbours.
Needs calling in to VM.
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Seph.
My advice is at your risk.
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15-04-2019, 13:34
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#9
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Inactive
Join Date: Dec 2008
Posts: 116
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Re: What could be causing the constant SH3 reboots?
Engineer replaced the modem and its showing 4 upstream channels now. Said upstream power was borderline but left it at that. Uploading a lot to stress test it and everything is smooth so far. Problem solved!
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15-04-2019, 13:37
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#10
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CF Resident Dog
Join Date: Mar 2005
Posts: 14,254
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Re: What could be causing the constant SH3 reboots?
What are your new levels out of interest?
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PSN: Snoopzster
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15-04-2019, 14:03
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#11
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Sulking in the Corner
Join Date: Jul 2009
Location: RG41
Services: 1 Gbps; Hub 4 MM; ASUS RT-AX88U; Ultimate VOLT. BT Infinity2; Devolo 1200AV
Posts: 11,955
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Re: What could be causing the constant SH3 reboots?
4 upstreams max out at 51dbMv. Then the system resets.
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Seph.
My advice is at your risk.
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15-04-2019, 23:33
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#12
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Inactive
Join Date: Dec 2008
Posts: 116
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Re: What could be causing the constant SH3 reboots?
Plot twist. A reset just now has resulted in the new modem also reverting back to 1 upstream channel at 5.8dBmV.
Will this need to be adjusted at the cabinet or will an attenuator be OK? I believe I have a few lying around from years ago but not sure if they're applicable to upload
Last edited by apb27; 15-04-2019 at 23:44.
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16-04-2019, 00:02
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#13
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CF Resident Dog
Join Date: Mar 2005
Posts: 14,254
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Re: What could be causing the constant SH3 reboots?
Quote:
Originally Posted by apb27
Plot twist. A reset just now has resulted in the new modem also reverting back to 1 upstream channel at 5.8dBmV.
Will this need to be adjusted at the cabinet or will an attenuator be OK? I believe I have a few lying around from years ago but not sure if they're applicable to upload
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Cabinet I believe for upstream, you need an engineer as 58 is far too high, the other engineer should have fixed this.
You still haven't told us what levels you had on 4 upstream after the hub swap as that is important.
Your upstream isn't actually 5.8dBmV as on the latest firmware the decimal point is in the wrong place.
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PSN: Snoopzster
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16-04-2019, 07:21
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#14
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Sulking in the Corner
Join Date: Jul 2009
Location: RG41
Services: 1 Gbps; Hub 4 MM; ASUS RT-AX88U; Ultimate VOLT. BT Infinity2; Devolo 1200AV
Posts: 11,955
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Re: What could be causing the constant SH3 reboots?
He would have had at least 51 dBmv on the upstreams or any one of them.
It's either a locality fault (check with neighbours) or specific from the drop point to the external wall box.
__________________
Seph.
My advice is at your risk.
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16-04-2019, 12:25
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#15
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Inactive
Join Date: Dec 2008
Posts: 116
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Re: What could be causing the constant SH3 reboots?
Update: got an engineer scheduled for tomorrow so hopefully it can be nipped in the bud for good
This is what it looks like this morning 
Neighbours down the road aren't having issues. Gonna get back on the phone with customer service and request another engineer visit
Last edited by apb27; 16-04-2019 at 13:01.
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