Sleep button reinstall - Button is not clicking down
I'm in the middle of a iPhone 4s repair and am trying to install the power/sleep button but I can't get it to click down when it's screwed in.
I've tried looking up the problem but found no definitive answer. The button is in the correct orientation, and the only thing I found that might be plausible is that I am missing a little black dot on the button and that's why it's not clicking...
Not sure what to do at this point, any help is appreciated. Thanks.