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  • (Score: 0) by Anonymous Coward on Sunday May 11, @01:56AM

    by Anonymous Coward on Sunday May 11, @01:56AM (#1403356)

    We had a switch where a green LED was normal and red was an error. Except for one hardware version. There, red was normal and green was an error. Next version they switched the colors back. The story told to us by our support rep was that they changed two-color LEDs and no one realized that it had the opposite pin out. Rather than eat the cost or get into a huge fight, the OEM just changed their documentation for the bad units as a new revision. It was a pain to scan the lights because you had to remember which switch was which revision. Finally we figured out how many "red LEDs" we would have and our redundancy needs, we started putting them in specific places and marking cabinets in with red painter's tape so the mental load was lower. Ended up saving a ton of money because they had a hard time selling that revision to other customers.

    Moral of the story. Sometimes double checking your design can save your company hundreds of thousands of dollars down the road.