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risong
 
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Default how to wire headphone jack with three wires.

Hi,
I have a set of Shure earphones that act up at times. I am quite sure
that the problem lies in the jack. My question is there are 3 leads. I
have bought a new jack, but I really do not know where to connect these. I
tried a local TV repairman and he said he didn't know. The original Shure
jack is molded and I cannot just follow the wire. I've searched on Google
for a wiring diagram. These are quite expensive earphones and I don't want
to mess them up by guessing.
Any suggestions?
Thanks in advance