Sparking a romance broke a mainframe
Briefly

The article shares a story from Zeke, a field engineer, who reflects on a career-altering mistake made while troubleshooting a communications failure in a major department store. Despite his experience, a spark from his wedding ring short-circuited the system, resulting in widespread damage. Zeke's experience serves as a reminder of the pressures engineers face in critical environments and the lasting embarrassment that can stem from momentary lapses in judgment. It's a humorous yet cautionary tale about the complexities of technical work.
I am still embarrassed 45 years later because someone else had to clean up my mess.
The job involved installing and repairing business modems and other comms gear in large banks, insurance companies, etc.
After replacing some cards, and reseating them all, the entire system had come down.
My recently acquired wedding ring had hit some pins and short-circuited the backplane, destroying almost all of the cards.
Read at Theregister
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