Hi all, Using some tools like anti-static wrist strap we can avoid this ESD. But when we don't have any of those tools, as a scenario, one good work is touching the body of the power supply when it's not colored repeatedly to be the same ground with it. OK. Please have a look at below images. I don't know the body of that power supply is colored or not so what can I do? I think of two solutions: 1- I can touch that 3 jacks of the power supply (PS) which they are directly connected to the inside of the PS. Or, 2- Put a metal screw driver into the PS from its vents and hit some things in inside part and touch that screwdriver from out while it's attached to inside! Which method do you agree with? Thanks. "America needs another Luther King."