Microwave Oven Failure: Spontaneously turned on by its LED display (2024)

This is literally evidence of stuff being designed to fail. An extra diode costs less than a cent at production scale. This was a manufacturing choice, not an error.

168 points and 116 comments at the time: https://news.ycombinator.com/item?id=41480038

Very impressive engineering on the door switches. On the display, not so much.