This is what I’ve always found too - it’s the fans that start getting noisy or fail before anything else.
Did you try applying new thermal paste too?
One of the comments:
Well worth it. 3.5 hours to complete. Macbook is near silent / silent now. I used Thermal Grizzley Kryonaut paste $30, liberally applied with the included spatula spreader applicator. Interestingly, the fan is now quieter even when running at the same RPM.
Mind you the same commenter does go on to say:
I’m a previous computer repair tech (20 years ago), I had all of the appropriate tools. Bottom line, I was lucky it booted back up. So many things could’ve gone wrong. Dozens of tiny connectors need to be perfect. I highly recommend the magnetic mat. The phillips head screws in the fan were seized and I needed to clean the fan with a brush and 60psi compressed air, after it was removed from the computer. Beware if you’re not comfortable working wit tiny parts, maybe recruit a nerd’s help. Thanks How-FixIT!
