Audio only playing in one side of headset.

I have a wired pair of HS60 Corsair headphones. Recently the audio started only coming through on the right side of the headset. It is definitely a hardware issue. Other headphones, both wired and wireless, do perfectly fine. The same headphones also have the same problems across multiple computers. I have taken the ear cups off and pulled the driver from the left side to inspect for a loose wire connection to the driver, but everything looks good and wiggling the wires never makes the audio come back. I also have massaged the cord going from the headset to the pc to see if there was a short I could find in it, but the audio never came back that way either.