I have the Audio-Technica ATH-R70x headphones which I find the best headphones I ever used.
But standing up from my listening seat one day, didn't realize I was stepping on the cable. After the snag, the left channel would not make a sound. I thought I damaged the cable so I ordered a new one. Still, the left channel would not work.
I opened up the headphones but could not see any visible damage to the speakers themselves so I would assume the damage is on some wire being pulled loose somewhere.
Is there anyone there who does headphone repair?