Re: My headset broken and I need serious help !!
The problem can be in the wires, or it can be in the transducer.
* Are you able to unsolder wires from the bad transducer? Then test the transducer alone by applying an audio signal.
* Be careful not to yank on wires. Those are very thin wires running to the voice coils. If you break one you'll have a tough time fixing it.
* Do not apply heat longer than necessary, or you will melt the plastic. The solder pads might come loose.
* Can you test the wires with an ohmmeter? Test each for continuity. Test them for crosstalk. It's better for the transducers if you unsolder them first.
* Long-time use (or use at high volumes) can eventually cause breaking of wires to the voice coil. I don't know of a way to solder tiny wires in such a small space.
* Bend the wires, wobble the plug, to get a hint whether an internal wire has bad contact. You might have intermittent contact, or reduced volume. You might need to rewire it. I find that 4-wire telephone cord is suitable.