Chosen Solution

House of Marley smile jamica earphones, sound is not coming from left one but the mic button in the line of left one is working. Right ear piece too working fine. Please tell me how to solve it.

probably the strain relief on the upper side killed the earphone , You will probably need to resolder it which will be a hassle especially since the cable has a very strong braid in the inferior side. You’d be better off by buying another pair of headphones in my opinion.