There are many causes for Samsung won't turn on issue. As for Samsung not turning on accompanied with 50mA-80mA boot current, the first thing we usually do is to check the power supply voltage. If nothing goes wrong, the fault is most likely related to CPU. If there is abnormal voltage measured, then check the corresponding faulty position on the board. For our case today, the fault component is finally confirmed as PMIC U7003.To fix the S7 edge won't turn on issue, we can replace it with a new PMIC. Let's check the video to find out how to troubleshoot Samsung S7 edge can't turn on.