Man, that sounds brutal... tracing a single wire for a whole weekend. Did you have to pull new wire through that whole conduit run, or were you able to splice it somewhere? I had a similar thing with a fire alarm horn that wouldn't stop beeping. Spent a day and a half on it... turned out to be a tiny crack in a circuit board trace you needed a magnifying glass to even see.

Yeah, that's exactly why I don't skip it anymore either. I had a close call with a GPU, felt a tiny zap and my heart just dropped. Ever since then, I'm like @burns.mila, I won't even open the case without touching the power supply first. It feels silly until you lose something, right? That extra minute is nothing compared to waiting for a new part to ship.