I'm trying to repair my Shure PTH "push to hear" device. I use this in combination with sound isolating earphones.

It's a 5 core cable with copper shielding, one of the 5 is a copper ground. 

The whole length of cable seems buggered. I've already cut off and resoldered from a new end, but the sound still cuts in and out indicating an issue with the ground cable.

I've had a look around and can't find suitable replacement cable that will do the job.

You will notice on one side there is a 3 core cable. The 5 core cable is required for an extra channel for the "push to hear" microphone.

Any help greatly appreciated.