Question Headphone cable repair

[DubZeroSP_1]

So I decided to try to open and solder my headphones after identifying the area of the problem, but when I opened the cable, it was not what I expected. I thought there would be 2-3 insulated copper wires and the solder would be easy, but when I opened them I found this (images attached), a copper wire, some white wool? and a black wire (the black wire is somewhat torn at the base and I think that's causing the issue because the rest of the cable looks fine). These are Sony WI-C300 wireless earphones. Any help or suggestions are appreciated! Thank you in advance

Image 1: https://drive.google.com/file/d/1L1Va82JcvBuLHGXU5Kau5iVRxs7MkTue/view?usp=drivesdk
Image 2:https://drive.google.com/file/d/1Ke2Hz140VxNt0EaZ0n10oKmzXeC8ItPO/view?usp=drivesdk

 

[Christopher Ortiz]

How are you planning to fix them if they only have a certain amount of cable to work with. If you are going to splice them and then re-solder I can give you some tips to solder small wire like these. The string you see in there is what gives the wire strength so that it won't rip easily.

You need to tin these wires and it almost impossible since they are so small. I went through a lot of trial and error in order to get shiny wire every time. I tried burning, scratching, sanding and I would either burn the wire or rip it and leave almost no strands. The best way to do it is set your soldering iron to 400C, then add solder blob to the tip of the iron and add some flux to the cable. Put the tip of the wire into the blob of solder and it should start removing the enamel from the wires and give you a nice shiny tin.

After you tined your wires it just basic soldering you might need some heat shrink and some helping hands to keep the wires steady when soldering.