Only one speaker works, even after both were replaced

@bogdanbirdie and once you replace the headphone jack and it should still not work, you want to check your audio amps

@oldturkey03 - Which is why I pushed testing things first! Why waste the effort if the DAC chip is the issue.

@danj interesting. I would not even have considered this to be a DAC issue at this point. "and only the left channel was working and quiet" would lead me to check the audio amp circuitry. I don't get the point of going for the DAC if the headphone jack is not working, and the speaker amplification is not doing what it is supposed to do. Apple sure does weird things ¯\_(ツ)_/¯

I am glad you got this covered.

@oldturkey03 - I haven’t seen that many DAC issues (excluding liquid damage) I’ve replaced a few sockets across many systems. The key is to check if a headset failed to work. The retina series used a Cirrus DAC logic the laptop products offered a stereo amp within the chip.

Unless you are pushing some serious speakers your not likely to burn it out.

@danj so the Cirrus DAC took over the speaker amplifiers in the Retina series? Interesting, very interesting what Apple does here. Well, like I said, glad you got this taken care off. I am out ;-)