Categories: Cable Modems

Cable Modem Troubleshooting: Terayon TJ715x

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Light patterns, images, manuals and more helpful info for the Terayon TJ715x cable modem –



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Manufacturer: Terayon Model: TJ715x
Modem Light Indicators
Power Off – unit is not receiving power
On – unit is receiving power
Cable Off – no downstream signal or power off
Flashing slowly – downstream signal present, ranging in progress
Flashing fast – registration in progress
On – modem is acquired and ready to transfer data
PC Off – no carrier to/from PC is present or power is off
On – carrier to/from PC is presentr
Data Off – no data is being transmitted or power is off
Flashing – data is being transmitted
Test Off – initial self-test OK or power is off
Flashing – self-test or software download in progress
On – self-test failure
Notes and Useful Information:

Installation Manual, .pdf (757KB)
Manufacturer Website
Manufacturer Product Page
Manufacturer Support Page

View Comments

  • No one has answered the question of how to fix tj715 when all lights come on and stay on only with power cord in. Changed to 10v same problem.

  • All of a sudden my son needs a password when visiting for his phone. I do not know of ever having to use one?

  • I also suddenly had all of the modem lights stay solid lit, even after several power cycles. I replaced the Terayon-branded 10V power supply with a 12V, and the modem worked again.

    Why is Terayon shipping under-powered supplies that fail? Stop!

  • where can I buy this modem? I desparetely need it ..how much does it cost..I cant find it in Kenya

  • my godbros internet isnt working and he did all of the troubleshooting and it still isnt working wen he restarts it all of the lights are solid green and wen it does work it restarts itsself all the time

  • This may or may not help some folks with the TJ 715X Terayon modem.....I have Comcast in Jacksonville, Fl...The cable indicator light was flashing about once per second and I had no internet connection, then all lights including the yellow data light stayed on ....The voltage read 8.4 vdc instead of 12 vdc at the output of the power adapter....I had an extra power adapter and when I replaced it, the modem worked....Ihad purchased a modem and power supply from Amazon.com and then found out that I could not just connect another computer in another room (you have to register and pay Comcast!)....Since I was renting the modem I will try to swap out with Comcast and avoid future rental charges as I have a modem and adapter I paid for ...Jim

  • i have installled alll the thing required but it is disabled and how do you start operating it. it tell unidentified cable????
    please give me the solution asap.
    thankyou

  • got one of these a week ago from my cable company, works when connected directly to PC via Ethernet
    my problem is ,I got 2 routers so far that won't talk with this modem, when ethernet cable is connected, PC light on modem stays off, and no indication in the router of the connection
    the routers are, 3com 3crwer100-75 and a USR5461
    I don't feel like dishing out some cash for another router that won't work.
    suggestions?

Published by
Ross McKillop