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I have a cat6 wired home network and have been trying to replace the jack for one of the cables but there seem to be an issue. When I use the cable tester, I see this sequence: 1, 2, 3, 4, 5, 6&8, 7, 6&8. I tried redoing it many times and I keep getting the same result. I am guessing there is a short circuit somewhere, but not sure how the coloured cables map to the LEDs. With T568B setup, is there a standard mapping to the coloured cables that I can use to figure out which two cables are short circuiting? I can keep removing the cables 1 by 1 and add them back, but there is not much cable left outside of the wall so I do not want to keep cutting them out.

  • Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. – Community Sep 18 '22 at 20:17

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A Google image search for "t568b" will show you plenty of images with the information you are after.

6 is Solid Green 8 is solid Brown.

I hope Im wrong but it sounds like someone has damaged the cable in the wall (maybe with a staple / nail? Either that or the wires have been stripped which would be very wrong technique.)

davidgo
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  • I know in t568b the order of cables are: 1: striped orange 2: orange 3: striped green 4: blue 5: striped blue 6: green 7: striped brown 8: brown Do you mean the 1-8 LED represent the health of 1-8 cables, **respectively**? In which case it makes sense if solid green and solid brown are short circuiting somewhere – Reza Jooyandeh Sep 18 '22 at 21:54
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    Yes, the 1-8 on the standard cable testers represent the respective pins. – davidgo Sep 19 '22 at 01:37