How do I repair the volume control?
Sennheiser HD 4.40 BT
I really need some help. My dad just brought me a pair of Sennheiser HD 4.40 BT, and withing 3 days, I dropped them, and now the up on the volume control is mushy and doesn't do anything. The down volume still works. How would I fix it? And where could I get the parts? Thanks in advance.