Why is only one headphone playing and the other not?

JOSHU BUGAS there should be a crossover cable going from the Right to the Left speaker. You will have to remove the ear cushion and remove the speakers from both side. Check the cable between both of them with a multi meter for continuity. Check the soldering of the wires on both sides to make sure it is still intact. Something like this video will at least get you into the headphone for a check. Post some good pictures once you have it partially disassembled, with your QUESTION. That way we can see what you see and hopefully help you further. Adicionar imagens a uma pergunta já existente