We produce an electronic automotive product and I'm currently completing a DFMEA. I'm trying to ensure I capture all potential root-causes to the failures modes. As part of this I'm concurrently doing a 5-why root-cause analysis for each failure mode. But can anyone suggest any other structured approaches to ensure I capture all causes? I was thinking about looking at the lifecycle of the component and identifying any potential hazards at each stage - is there a formal process for this or just brainstorming?
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