Tools & Home Improvement > Hand Tools > Screwdrivers & Nut Drivers > Screwdriver Sets
LWJ-1968 Electric Voltage Tester Screwdriver Set
Brand: Generic / OEM
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Audited BOM: 10 Components
RMA Chain & Defect Intelligence
Root cause causal graph linking factory engineering flaws to verified consumer return reasons.
⚡ Causal Link: Defect to Consumer Return
The basic electronic circuit and low-quality LED (ENG-001) lead to voltage tester failures (RMA-001), resulting in customer complaints (REV-001, REV-004) about inaccuracy and component burnout.
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