|I'll admit I never actually used an anti static wrist strap or anything like that before and it seems that things worked out fine. I just touched the metal of the case like some people say, but that is with the power cord totally unplugged.|
But next time I do it I'll want to make sure I do it properly, and upon further reading it seems like there are too many conflicting reports. Some say the PSU has to be plugged in to be properly grounded, while others say to unplug. If it's unplugged, does touching the case metal discharge yourself, considering it's not in contact with the ground at all? How does that work?
Also, in the event that there is static damage to parts, since even voltages unnoticeable to humans can damage hardware with only minor symptoms, what sort of things would indicate that hardware has been damaged by ESD? i.e how would I know?
If I use a wrist strap and connect it to the case's metal, and nothing is plugged in, is that the correct way to do it?