Hello, I bought headphones for PLN 60 on the Allegro, but unfortunately they came to me with one of the headphones not working, but the company refunded me money for the damaged goods, and I thought that maybe I will repair them I do not know it very well, but I will try what you think it may be in the problem is that one earphone does not work, the earphones are not damaged, the outside is in perfect condition, I unscrewed the earphones, the right and left earphones and all the cables are connected, everything is fine and I have no idea what could be wrong with them, I think someone will help.