What's your most frustrating 'war story' about trying to source a discontinued PLC module that turned a simple 4-hour repair into a 3-week production shutdown, and what systemic changes would prevent this from happening to others?

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Oh man, let me tell you about the time we had a critical Allen-Bradley PLC module fail on a Friday afternoon. It was supposed to be a simple swap - just pull the old one, pop in the new one, and be back up in 4 hours. But when we checked our inventory, we discovered the module had been discontinued for 2 years and we had no spares! What followed was a 3-week nightmare of calling every supplier, checking eBay listings, and even trying to find used modules from decommissioned plants. The worst part? We found one on an obscure website for 10x the original price, but it turned out to be a counterfeit that fried our entire rack when we installed it. Production was completely shut down, costing us hundreds of thousands in lost revenue. The systemic changes that could prevent this are: 1) Implement a proactive obsolescence management program that tracks component lifecycles, 2) Maintain strategic spares inventory for critical components, 3) Develop relationships with certified refurbishers, and 4) Create migration plans for aging systems before they become emergencies. Treat sourcing as a quality function, not just a purchasing task!

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What's your most frustrating 'war story' about trying to source a discontinued PLC module that turned a simple 4-hour repair into a 3-week production shutdown, and what systemic changes would prevent this from happening to others?

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