Health & Household / Oral Care / Dental Flossers / Water Flossers
220ml (7.4 oz) Rechargeable Portable Water Flosser Oral Irrigator
Brand: Generic / OEM
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Audited BOM: 5 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 absence of conformal coating treatment on the main PCB allows moisture to infiltrate and permanently corrode conductive traces, resulting in a definitive loss of electrical contact and failure to initialize.
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