On Sat, 22 Aug 2009 16:56:50 +0100, M.Joshi
wrote:

Does anyone know of an easy method to detect where the break might be
in the cable before I cut the other connector?

The easy way is with a capacitance meter. Connect between a known
good wire and the wire that's suspected of being broken. Measure the
capacitance at both ends. If there is a break in the wire, the ratio
of the two capacitances is the ratio of the length of broken wire to
the total length of the cable. If the capacitance from both ends is
equal, the wire is broken in the middle. Compare capacitance with
other wire pairs in the bundle. Do NOT measure to the shield, where
the capacitance is highly dependent on the wire position inside the
bundle.

I also use a TDR (time domain reflectometer), mostly for finding where
the mice have chewed their way through ethernet cable. I've built
several and have a few pieces of commercial hardware with a built in
TDR. The problem is that you'll need a VERY narrow pulse to measure
short cables. A telco style TDR is more suitable for cables that are
5 meters or longer.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558