Hi, sorry if I'm out of order asking this here, is there someone in the UK who could help in performing a cable swap on a pair of MH755s for me?
I've done a few of these now, all of them have worked, except for the one where I burned the plastic shell with the soldering iron which changed the shape and prevented it from closing up again. Don't do that. The steps are easy: remove the old cables and attach the new ones. There, two steps, easy peasy.
For more detailed steps, the following should work:
1. Get a soldering iron and solder.
2. Turn iron on.
3. Remove tips, separate shells. I use the dull "knife" on a nail clippers in the shell hole and twist and/or pull gently. Don't increase the hole size.
4. Fasten the shell to a clamp, or if you have three arms, hold it. Don't burn yourself.
5. Put now-hot soldering iron against soldered wire. When hot enough, remove old wire. Do for each.
6. You now have a driver with no wires. Untie the knot from the wire and remove the shells and tension sleeves.
7. You should now have two each of shells and tension sleeves. Throw the useless wire in the trash.
8. Sometimes it's easier to remove the tension sleeve from the shell by pushing it up and through.
9. THIS STEP HELPS IMMENSELY - spray WD40 through each sleeve using the long red straw attachment. Do this outside so you don't get it all over your carpet.
10. Thread new DIY wire through small shell hole then pull out through big hole.
11. Push DIY wire through each sleeve, narrow-end first, eventually pulling it through the large end with the flat side. This will be much easier if you did step 9.
12. Tie end of DIY wire into a knot. This is part art: don't leave too much wire left after knot to solder or it won't fit in shell. 1/4" works.
13. Solder colored wire to red solder point of driver (it may be blue). Solder other wire to non-colored solder point.
14. Step 13 works better if you have a clamp or a third arm. Tinning wire is your friend. Step 14 can require patience, esp for the 2nd wire.
15. Repeat on other driver and its two wires.
16 Push shell up over sleeve, pulling sleeve into shell so that the flat part rests in ridge. You'll need the space.
17. Pull shell-sleeve assembly up towards knot, making it rest as far down as you can.
18. You now have two wires about 1/4" long separating your sleeve-shell and driver. Try to close shell by gently putting wires in what little space remains in shell.
19. When this fails, and it will, twist shell a little bit and see if wire fits now. Push shell and driver together until you get a satisfying click.
20. Turn iron off.
21. Save your L tips for me.
22. Enjoy the best earphone $3 can buy.
I'm doing this from memory, so if I skipped a step, I'll go back and edit. Easiest steps to forget are 10 and 12