If a phone physical powering button is damaged, then it surely needs to be changed.
To figure out if the power button is actually the problem, you should plug your phone into the charger socket then check if it charges, if it does, allow the light to go off then press the power button to ascertain if the screen will show up, if it doesn’t then the problem is from the power button and needs to be changed at the point you will need the service of an experience phone repair engineer, you can click here to request for our phone repair service, because at Chrisrepair.com we offer swift and hassle free phone repair services.