Aporte original por: Chris Stables ,
First off. There is no need to put a heat gun near the logic board. When you don’t smell alcohol on the board it means it’s good to power up. I think it would be best to try another screen and see if the phantom touch is still happening as I have seen some of the X model where it has turned out to be oxidised pads on the interposer board. If it is the screen causing it from the liquid damage you are better off replacing it.