Question Weird ethernet test result after new rj45 connector

[JasonLowther]

Hi
I am replacing the rj45 connector on the end of a 100m ethernet cable. Every time I test the cable the tester gives a steady light number 1 and 5, and no other lights. I've even tried wiring into a socket and the same result. Any ideas / solutions welcomed! THANKYOU

 

[razel]

Replace it again,
or
perhaps whatever issue you were trying to solve with replacing the connector isn't from the connector. You did state it's a 100m VERY long cable.

Things happen.

 

[Fallen Kell]

Yeah, you could easily have a break somewhere. Most likely places are near the end pieces especially if it had a sharp turn/bend in it. It is also possible that the endpiece is installed incorrectly. This is one of the reasons why I don't tell people to just make their own cables anymore, especially if you are trying for gigabit or higher speeds. It is simply too easy to have something not 100% correct which causes problems.

 

[JackMDS]

Try one of these - https://www.amazon.com/Monoprice-RJ-45-180-Degree-Punch-Keystone/dp/B003L11H48/

Strip the end of the wire, punch it and plug a short cable and test.

It will give you a visual grip on what you are doing.

 

[Fallen Kell]

Also, there are some cable testers out there that can estimate the location of the break. I believe the function is typically called "TDR" (Time Domain Reflectometer). But most of these are going to cost you a couple hundred if not thousand dollars (fine if you are doing this for a living running wires at companies and homes as a contractor, but pretty expensive investment for a DIYer).

 

[JasonLowther]

Thanks everyone.

I'm not convinced there's a problem with the wire - it was working perflectly (except the little clip thing) until my daughter decided she was fed up with the clip problem and woudl replace the plug...

I'm think the keystone jack is a good idea, although I tried a network socket and got the same problem (https://www.amazon.co.uk/gp/product/B07G2JBCBT/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1)

:-(