My old Senheiser HD 598s stopped working recently. Sound only came from one of the speakers. I took them apart to see if I could spot any issues but it all looked good. I tried wiring the working speaker to the not working speaker and that made the speaker work. I then thought the issue might be the wiring through the headband so I added new wire but that still didnt work. I ended up doing more testing and settling on the issue being the right output for the headphone jack and since I couldn't find a replacement part I am gonna have to throw them out.

On the positive note im getting a lot better at soldering and more confident taking things apart and soldering the wires around. Now I just got to wait for the next thing to break so I can attempt to fix it.