hey, if somone can please help me, I've blown up 2 atx2 power supplys , cant seem to understand why this happens , I use a modified pololu electronics board it only connects to the ground and the +12v rail of a power supply , and then after a week boom.... and the power supply is dead. all I can think of that could potentially cause this is the fact that i switch the power supply on and off a lot , it powers everything , including the arduino and hot end and motors from one rail .
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