So I have some SE external speakers, mps-60.
These ones:

It worked fine with my k750i for a few months, then the sound only started coming out the left speaker. The next day, no sound at all. It's not the phone's fault, as it works fine without them. When its plugged it, no sound comes out. At all.
Did I overuse it or what? I pretty much used it for a few hours everyday.
Or would it be dirty or something. At one point the handsfree earphones also stopped working on one side but that was before the speakers messed up. Then I lost them ._.;
How much would it cost for me to get new ones? Both earphones and speakers?
Thanks for any help.










