I call it "Mechanic Effect"
I used to do quite a bit of freelance auto repair, and still am asked for help with them. It's almost a script.
"Hey, can you take a look at my car? It's been making this weird noise all week."
"Sure! Fire it up." (crank up vehicle, listen attentively...)
"That's funny. I swear, it was doing it earlier."
Machines ARE afraid of the Skilled Fixer. They see that knowledgeable swagger in our walk and decide to straighten up before the tools come out.