Modem reset a few times a week

[gipesu80]

All,

I started to get more anoyed with the modem disconnects and reboots. I have the following modem signal information after a fresh reboot. Are those ok, is it something else?

I see a lot of R02.0 Critical errors:

May 04 2020 14:10:03

3-Critical

R02.0

No Ranging Response received - T3 time-out;

Downstream	Bonding Channel Value
Channel ID	13	14	15	16
Frequency	597000000 Hz	603000000 Hz	609000000 Hz	615000000 Hz
Signal to Noise Ratio	35 dB	35 dB	36 dB	36 dB
Downstream Modulation	QAM256	QAM256	QAM256	QAM256
Power Level The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading	-10 dBmV	-10 dBmV	-9 dBmV	-8 dBmV

Upstream	Bonding Channel Value
Channel ID	3	2	1
Frequency	23000000 Hz	29400000 Hz	35800000 Hz
Ranging Service ID	13779	13779	13779
Symbol Rate	5.120 Msym/sec	5.120 Msym/sec	5.120 Msym/sec
Power Level	54 dBmV	54 dBmV	54 dBmV
Upstream Modulation	[2] QPSK [1] 32QAM [3] 64QAM	[2] QPSK [1] 32QAM [3] 64QAM	[2] QPSK [1] 32QAM [3] 64QAM
Ranging Status	Success	Success	Success

Signal Status (Codewords)	Bonding Channel Value
Channel ID	13	14	15	16
Total Unerrored Codewords	268774946	268774458	268774627	268774546
Total Correctable Codewords	57	36	45	39
Total Uncorrectable Codewords	964	1463	1287	1375

[CCAndrew]

All your upstream channels are too high and out of spec, post the rest of your downstream signals. The ones you posted are too low or close to being out of spec. Both will contribute to a modem resetting

[gipesu80]

Tahnks for your reply.

What do I need to check? the cable connections, or the modem is going bad?Are are the normal values for downstream/upstream? 

[CCAndrew]

You need your downstream levels to compare. But the upstream has to drop at least 4-5db. Generally, it’s your cable connections but it could also be an outside drop or tap issue

[EG]

In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.