What's the Worst RJ45 Failure You've Seen in the Field?

I've been documenting real-world RJ45 connector failures and their fixes. Three that stand out:

• Coastal wind farm: standard RJ45 corroded in 6 months → fixed with IP67 waterproof
• Train PIS: snap tabs vibrated loose → fixed with XLR locking connectors
• Robot camera: discrete magnetics didn't fit → fixed with integrated PoE RJ45

What's the most memorable RJ45 failure you've debugged — and what fixed it?

Full case studies: https://voohuelectronic-ux.github.io/voohu-rj45-guide/resources/rj45-case-studies.html