Electronics Repair, Refurbishment & Depot Operations worked example

No-Fault-Found Rate at 68% target no-fault-found rate: a worked example

Suppose target no-fault-found rate falls to 68%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Measure the share of returned electronics that pass diagnostics with no confirmed defect, helping quantify avoidable RMA volume and customer support burden.

The inputs for this scenario

  • Units returned with no fault found: 8 units (held at the documented default)
  • Total diagnosed RMA units: 250 units (held at the documented default)
  • Target no-fault-found rate: 68 % (the input this scenario stresses; the baseline uses 95)

Working through the calculation

  • The calculation starts from the formula this tool documents: No-fault-found rate = no-fault-found RMA units ÷ total diagnosed RMA units × 100.
  • No-fault-found rate works out to 3.2 % at these inputs, and this is the headline figure for the scenario.
  • No-fault-found gap to target works out to 64.8 points at these inputs.
  • No-fault-found RMA units works out to 8 count at these inputs.
  • Total diagnosed RMA units works out to 250 count at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target no-fault-found rate sits at 95% and the headline result is 3.2 %, this scenario lands almost exactly on the baseline at 3.2 %.
  • It computes the percentage of diagnosed RMA units that were returned but had no reproducible fault, then shows the gap to your target rate. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • No-fault-found rate: 3.2 % (headline result)
  • No-fault-found gap to target: 64.8 points
  • No-fault-found RMA units: 8 count
  • Total diagnosed RMA units: 250 count

Run it with your numbers

  • To rerun this with your own numbers, open the live No-Fault-Found Rate calculator, set target no-fault-found rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.