Had the same thing happen to me (actually bought dead phone on purpose but whatever) so I did this, as I didn't want to use owen (my parents probably wouldn't let me anyway): I took my hairdryer (2500 W), put extension that makes air more focused and precise, took the board out and blazed the SoC for few minutes. Note that I held SoC down all the time. So it worked and i placed paper between screen and SoC, thick enough to keep SoC pressed and possibly enchance colling a bit (as G3 doesn't have any cooling and thats such and failure but whatever). I hope it doesn't die again but I am confident it won't.