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CAT6 connection problems

  • 28-04-2021 6:03pm
    #1
    Registered Users, Registered Users 2 Posts: 764 ✭✭✭


    Hope you can help.

    I've a small CAT6 network with sockets in rooms and patch panel in utility.

    I borrowed a tester and found lots of the sockets failed the test.

    The first one that I'm trying to fix is proving very difficult -- the tester says "only lines 1 & 8 connected" so I've done the following
    1. Repunched the socket and patch panel -- same fault
    2. Found the second backup cable and punched that at the patch panel and socket - same fault

    How can this be? I'm using a different cable and re-punched ? -- totally confused :confused:

    2021-04-28-18-53-01.jpg

    2021-04-28-18-53-23.jpg


Comments

  • Registered Users, Registered Users 2 Posts: 4,255 ✭✭✭smuggler.ie


    Plug "known good" cable one end to the computer, other into the tester - this should verify its not the test tool at fault. Try different tester if avail.

    Providing crimping/punch done correctly, check contact pins inside wall plate(s) - could be "flattened"/damaged and make no contact.

    Cable damaged in the wall would be very sad news...


  • Registered Users, Registered Users 2 Posts: 764 ✭✭✭buzz11


    Mention of cable damage got me to do a continuity test and all pairs are fine - phew!

    The tester seems fine - tested with a number of test leads.

    So perhaps the modules are poxy? 7 out of 16 outlets in the house have failed so theres a pattern somewhere.

    I'm using this cheapie punch down tool from screwfix https://www.screwfix.ie/p/philex-auto-trim-idc-impact-insertion-tool/67391


  • Registered Users, Registered Users 2 Posts: 4,255 ✭✭✭smuggler.ie


    if uncertain, try double-punch same wire, then test again.

    As for modules, observe inside port. USB drives fit perfectly into RJ45 and "flatten" pins, have seen multiple, however usually its printer/PC ports that gets damaged that way by user.


  • Registered Users, Registered Users 2 Posts: 14,048 ✭✭✭✭Johnboy1951


    buzz11 wrote: »
    Mention of cable damage got me to do a continuity test and all pairs are fine - phew!

    The tester seems fine - tested with a number of test leads.

    So perhaps the modules are poxy? 7 out of 16 outlets in the house have failed so theres a pattern somewhere.

    I'm using this cheapie punch down tool from screwfix https://www.screwfix.ie/p/philex-auto-trim-idc-impact-insertion-tool/67391

    You should be able to visually check the connector pins in the outlet sockets to ensure they look good ...... not bent/damaged/flattened.
    Regarding the PunchDown tool .... I much prefer to use a simple manual tool to press the wires into place, but have tried a similar tool to the one you linked. I found a few wires not properly in place and corrected the errors with the manual tool. I since use it and not either of the punchdown tools I own.
    All that is to say, you need to carefully examine the connections on the sockets as they can easily look right but fail connection tests.


  • Registered Users, Registered Users 2 Posts: 431 ✭✭Diggerdunne


    Are you sure the problem is at the module end and not at the patch panel. I would take a known good module and swap it with a failed and see if the problem moves, then u know ya have bad mods. I personally don’t like them mods seen them fail many times


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  • Registered Users, Registered Users 2 Posts: 4,335 ✭✭✭KeRbDoG


    I never got on with punch down tools, for terminating data points I ended up using coupler type face-plates and patch-panels, which meant I just had to crimp the cat* cable and plug it in


  • Registered Users, Registered Users 2 Posts: 764 ✭✭✭buzz11


    I bought new modules and new punchdown tool and resolved most of the outlets.

    The one that I got stuck on turned out to be a fault on the patch panel - as suggested above

    Thanks for all the advice, its my first time to do this so was totally thrown by the crappy tool and modules


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