Help with CAT 6

[smj36]

Hi I am hoping someone on here can help me. I have recently renovated my house and installed CAT6 cabling in all rooms which I have patched into a 48 port Panel in my basement. I wanted to distribute HDMI over CAT6 and have done this successfully in my kitchen. I have come to set up the TV in my bedroom and have a fault on both cables, my LAN tester is showing a short on 4 and 5. I have repatched both sides and still no change. My electrician has tested with his continuity tester as i feared the cables had been damaged, but strangely every individual cable comes out fine. we stripped the end of al cables and even checked by touching them together at one end to make sure non were severed part was along the run. I am at a loss now as I get Internet signal through (tested both of them on my macbook) but still my Lan tester shows a short and the HDMI over CAT 6 doesn't work.


Please any advice on fixing this greatly obliged.

The cables are all in the walls now and can't be accessed.

Stuart

 

[azazel1024]

A short != severed. If the cable is pinched, it can cause a short between two pairs. Have you specifically checked for a short, versus an open wire? IE plug power on to wire 1, now check the voltage on wire 1-8, do any of the other wires show voltage on them? Now plug power on wire 2, check wires 1-8 for voltage. If any of these steps shows ANY voltage change on more than 1 wire, there is a short.

 

[Charlie_S]

Sorry but a severed wire is only a short IF the ends of two or more conductors are touching. Otherwise its open. The most reliable way to test a cable is temporarily run a known good conductor through the house from and to each end location of the cable in question. connect one end of the known good conductor to each conductor in your cat 6 cable ONE AT A TIME and check continuity with an ohm meter at the other end between the connected cat 6 conductor and the test wire. Continuity means the conductor isn't broken (but not necessarily that there is no problem). Now test EACH conductor in the cat 6 without changing the connection of the test wire. If any other wire shows continuity then there is insulation damage and bare conductors are touching each other. If there is NO continuity with any of the cat 6 conductors then the cable has been cut.
Repeat the above test for all conductors in the cat. 6 cable.