Why has Flex's power supply module production experienced a 15% decrease in yield over the past month?

Introduction

The 15% decrease in yield for Flex's power supply module production over the past month is a critical issue that demands immediate attention. This analysis will systematically identify, validate, and address the root cause while considering both short-term and long-term implications for the product and company.

I'll approach this problem by first clarifying key details, ruling out external factors, and then diving deep into the product, metrics, and potential internal causes. My goal is to provide a comprehensive analysis that leads to actionable solutions and preventive measures.

Step 1

Clarifying Questions (3 minutes)

• Looking at the timing, I'm thinking there might be a recent change in the production process. Has there been any modification to the manufacturing line or components in the last 1-2 months?

Why it matters: Recent changes often correlate with sudden performance shifts. Expected answer: Yes, there was a change in a key component supplier. Impact on approach: If confirmed, I'd focus on supply chain and quality control issues.

• Considering the specificity of the 15% decrease, I'm curious about our measurement accuracy. Has there been any change in how we measure or define yield in the past month?

Why it matters: Ensures we're addressing a real issue, not a measurement anomaly. Expected answer: No changes in measurement methodology. Impact on approach: If there were changes, I'd scrutinize the new measurement process.

• Given the magnitude of the decrease, I'm wondering about the impact on overall production targets. Are we still meeting customer demand despite this yield decrease?

Why it matters: Helps prioritize the urgency of the solution. Expected answer: We're struggling to meet some orders. Impact on approach: If confirmed, I'd emphasize quick, short-term fixes alongside long-term solutions.

• Thinking about potential quality issues, have we seen an increase in customer complaints or returns related to these power supply modules?

Why it matters: Connects production issues to customer satisfaction. Expected answer: Slight increase in customer complaints. Impact on approach: If true, I'd include customer feedback in our root cause analysis.