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ebtechie's avatar
New Contributor

DownSteam and Upstream bonded channel lights flashing

I have a zoom cable modem model 5341J, and after 3 to 4 years of service, the upstream went from a solid blue to a blinking blue, and more recent the downstream has. I know this means that it is having trouble with getting bonded channels however I think  the power and SNR levels are fine. I think it just might be getting a little too hot due to the thermal paste breaking down over time. Here are the levels copied from the Modem status page. The colors are not the ones I see on the webpage the headings are like blue and the signal information is gray. After "turning it off and back on again, the lights go steady for a period of time, but then go back to flashing.  I still have service, I just want to get this solved before my modem starts disconnecting completely.  So if you could let me know what you guys think that would be great.

Downstream Bonded Channels
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectables
1   QAM256   957000000 Hz 1.7 dBmV 38.9 dB 72637 12559
2   QAM256   927000000 Hz 1.7 dBmV 39.7 dB 155975 121472
3   QAM256   933000000 Hz 1.4 dBmV 39.4 dB 55717 11215
4   QAM256   939000000 Hz 1.2 dBmV 39.2 dB 61994 12934
5   QAM256   945000000 Hz 1.9 dBmV 39.4 dB 66781 12883
6   QAM256   951000000 Hz 1.0 dBmV 39.1 dB 75251 13142
7   QAM256   963000000 Hz 2.0 dBmV 38.7 dB 68470 11998
8   QAM256   969000000 Hz 3.2 dBmV 38.8 dB 67025 11620

Total CorrectablesTotal Uncorrectables
623850 207823

Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1   ATDMA   5120 Ksym/sec 36300000 Hz 51.0 dBmV
2   TDMA and ATDMA   2560 Ksym/sec 18400000 Hz 48.5 dBmV
3   ATDMA   5120 Ksym/sec 23300000 Hz 49.5 dBmV
4   ATDMA   5120 Ksym/sec 29800000 Hz 51.0 dBmV

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  • ChrisL's avatar
    Former Moderator

    I looked from this end and all appears well except for one of the upstream channels being slightly out of spec. Are there any cable splitters you can try bypassing and seeing if that helps?