@kickflipa180 there really aren't any common points for this, The most common issues were Firmware issues. Check the PSP forums for that.
After that, you can check your motherboard for any damaged, missing or charred looking component. Post some well focused and large enough images of your motherboard with the Question. That way we can see what you see and maybe identify an issue, [guide|21499] Pay particular attention to componets around CN9501 and IC9501 and 9502 and CN9503