Only one speaker works, even after both were replaced
I got an old MacBook Pro 15'' Mid 2012
Noticed that one speaker was not working and the other one was rather quiet, even on the max sound.
I replaced both, but nothing changed.
I swapped old ones from Left to Right, and only the left channel was working and quiet. So I suspect it's not a speaker issue but maybe something on the board.
Is there something I can look into further?