Okay, during a recent shopping spree on Newegg, I watched a video of "Paul", I think his name is; demoing something, a graphic card, power supply, or memory...I can't remember which, I've watched so many of their helpful videos in the last couple weeks.
But in one particular video, he demonstrated eliminating static discharge by touching a plugged in power supply, and saying that you could alternatively touch the computer case.
Except in this particular example, the PSU was .. painted.
Fine, I get that, the PSU case is connected to ground in the 3-prong plug, yes? And if it's screwed into the computer case, you would likely have an electrical connection at the screws, but only if you touch an unpainted part of the computer case, correct?
So what's the truth? How much grounding can you expect to achieve with a painted PSU or (in ever increasing numbers), cases with painted interiors? Is it time to start using a strap for certain case designs?