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Join Date: Mar 2021
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Trouble With R45 Connectors

04/11/2022 10:05 PM

I've connected RJ45 connectors to both ends of a cat5 cable, but when I test it on my laptop, there is no ethernet connection. I also have a working pre-made ethernet wire, so I know it's my own. I cut the cat5 to 12.5mm and join both ends with the same type of connection (i.e. s68A). I've tried it several times now with the same result: it doesn't work. I could test for continuity using a piece of twine and earth at both ends, but how do I test for continuity with an RJ45 connector?

The following are the difficulties that I'm aware of, but I'm not sure which is the most likely or if there are any others that I'm missing.

1. Poor quality connectors, not actually making contact with the laptop or router.

2. cat 5 not actually terminated inside the RJ45 connector

3. RJ45 Crimping tool not effective which leads to 2 above.

Cheers, all.

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Engineering Fields - Electrical Engineering - Been there, done that. Engineering Fields - Control Engineering - New Member

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Re: Trouble With R45 Connectors

04/11/2022 10:33 PM

You may have poor-quality connectors and/or crimping tools. Outside of that possibility, you might be applying the incorrect type of wiring pattern.

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Join Date: Aug 2005
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Re: Trouble With R45 Connectors

04/12/2022 6:12 AM

Use a "soft clamp" to hold the two ends next to each other:-