Hi
Here’s a guide on disassembling you beats solo pro
[link|https://m.youtube.com/watch?v=SBeHaqnw45w|https://m.youtube.com/watch?v=SBeHaqnw45w|new_window=true]
You only need to go up to the points of desolder them
As for the part you could try eBay and if eBay doesn’t have them try and find another faulty pair and use them as a donor but the parts are rare
If you need any help along the way please ask
Hopefully this helps
Any questions please ask
Thanks:-)