Have the same problem on a 2010 white plastic macbook running high sierra. Nothing I found on line worked. Then one day I...

Not a fix but a situation that needs an explanation. Mid 2010 MacBook running High Sierra lost Internal Speakers like a year ago. Only choices are headphones or Digital Output. Read every forum, tried every recommendation but nothing worked to restore them. I’ve been using headphones and/or Bluetooth speakers since. Then one day I set up a dual boot system with Linux Ubuntu for the heck of it. When booted into Ubuntu the speakers started working. Boot into MacOS speakers stop working. I erased the entire disk and installed a fresh copy of High Sierra. Speakers won’t work. Hopefully someone can take this info and help with a solution for all. Apple threw up their hands when I reported this.

Ok. Here is my contribution. I have been dealing with this for about one year and have tried just about all the solutions on every Mac forum at least twice. Nothing has worked not even temporarily. The affected unit is a white plastic 13” MacBook from 2010 running High Sierra. Two digital outs are shown when you click the speaker icon, headphones work, internal speakers do not. Red light visible in headphone jack. I will mention when trying the Audio Midi utility solution, all the options under output were greyed out. Last week I booted up with a Linux Ubuntu install USB stick that allows you to audition Ubuntu without installing it. The internal speakers came to life and worked fine all the time Ubuntu was the OS. Rebooted into Mac OS, no sound from internal speakers. Completely erased the disk, installed a fresh copy of High Sierra and nothing else. Internal speakers don’t work. So from this I gather it can’t be hardware and it can’t be third party software interfering with something. If anyone can use...

Hello I'd like to upgrade the SSD on my similar Mac Pro but unwilling to pay that much (see link above) Are there compatible 500 gb SSD's for this machine that might be less expensive? thanks djc

If you lower case is bubbling up, Apple will replace it free.