How can I get my speaker to work again?

How can I get my speaker to work again? I've tried turning my phone off and on, hard reset, removing SIM, cleaning out dust, using the hair dryer, network reset, cleaning headphone port, made sure the phone was not on vibrate,and made sure "Change with buttons" was on. There was no liquid/moisture damage. I was watching a video on youtube and all of a sudden my speaker went out. If I tap on the speaker it goes in and out but does not stay on/loud.