The trackpad on my Macbook isn't clicking. It doesn't have the haptic feedback nor the click sound. I've tried:
* checking that trackpad settings are correct
* resetting PRAM
* running diagnostics
* replace the trackpad with another one I got from ifixit
None of those solutions worked. Now, how likely is it that the trackpad I received from ifixit would be faulty? It was a used one.
What else can I do?