My noise cancellation is making a high pitched noise
crwdns2934249:0crwdne2934249:0:
Hello, I recently changed the battery of my headphones. Ever since then, my headphones have been playing this high pitched noise that only disappears when I turn off ANC. I think I messed up my battery repair by getting something too hot and I would like to know what part I would need to replace to get rid of this noise. Any advice would be greatly appreciated!