Quality Control Failure: The Margin Drain of Re-Repairs

Why every device returned under warranty costs your business double—and how structural quality gates stop margin leakage.

The Deadly Cost of Warranty Redos

When a customer returns with a screen that is lifting, or a camera that stopped functioning after a battery replacement, your business takes a massive financial hit:

**Double Part Cost**: You must consume another inventory item for free.
**Technician Double Pay**: The employee’s time is wasted repairing the same device again.
**Reputational Impairment**: Negative reviews drive away high-value retail traffic.

How iShopMaster Implements Structural QC Gates

In iShopMaster, a technician cannot mark a ticket as "Ready to Deliver" without passing through the **Mandatory Quality Control (QC) module** (`PATCH /api/v1/repairs/:id/qc`):

**Multi-Point Hardware Verification**: Enforces checklist items for front camera, ambient light sensor, speakers, and proximity sensors.
**Post-Assembly Hold Times**: Enforces diagnostic stress tests to verify battery draw safety and thermals.
**Evidence Photos**: Captures high-definition outtake photos to prove the repair met strict visual criteria before handover.