A defect was reported from one market, and the same production lot was shipped to another market two weeks later. The factory had recorded the complaint, replied to it, and continued producing from the same lot, because nothing in the process required the batch itself to be decided on. The failure was not in the reply; it was in what the reply did not trigger.
Charger defect handling: the four points where it breaks
Four points: nothing is contained, the cause is guessed, the batch is not decided on, and the fix never reaches the process.
Each produces a recognisable pattern, and each is visible in the record rather than in the product. The pattern is the same whether the defect is a marginal output, a connector that loosens, or a marking that does not match the artwork.
Handling a defect well is a sequence: contain, establish the cause, decide the batch, change the process. Skipping one step does not shorten the sequence, it repeats it.
Break 1: the defect is recorded but nothing is contained
Containment is a physical act, not an email.
It means identifying the units and the lot affected, holding the stock that is still in the factory, and informing whoever already holds units from the same batch. Confirm it by asking what was physically held when the last defect was reported, and where those units are now. A defect that is recorded without containment continues to ship, and the second report arrives from a different customer with the same photographs.
Break 2: the cause is guessed rather than found
A cause that cannot be demonstrated is a hypothesis with a deadline.
The test is simple: does the stated cause explain why this unit failed and its neighbour did not, and can it be reproduced or measured? Where the answer is a description of the defect rather than a mechanism, the corrective action that follows will change something unrelated. Confirm it by asking which measurement identified the cause, and on how many units.
Break 3: the batch decision is taken by whoever is available
Somebody has to decide what happens to the units already built.
The options are to release with evidence, to sort, to rework or to scrap, and each has a different consequence for the customer and the cost. Where the decision is taken informally, the batch moves forward and the liability moves with it. Confirm it by asking for the disposition of the last defect with the name of the person who approved it; where the file contains no disposition, the default was release.
Break 4: the fix never reaches the process
The change has to appear in an instruction, a fixture, a limit or a check.
Otherwise the next production run rebuilds the same defect from the same conditions, and the handling process repeats on a schedule. Confirm it by asking what changed at the station after the last defect and how the change is verified on the next batch. An answer that names a meeting rather than a document is a description of good intentions.
| Point of failure | What it looks like | How to confirm it | What the fix changes |
|---|---|---|---|
| Containment | A reply without a hold | Ask what was physically held | A stock hold and a customer notice |
| Cause | A description of the defect | Ask which measurement found it | A demonstrated mechanism |
| Batch decision | Movement without a disposition | Ask for the disposition and the approver | A named decision per batch |
| Process change | A meeting, not an instruction | Ask what changed at the station | A document, fixture or limit change |
What a defect record has to contain
Seven fields, and the record is what makes the process auditable.
The unit or lot identity; the defect and the measurement that identified it; the cause with the evidence behind it; the containment and the quantity held; the batch disposition with an approver; the process change with its verification date; and the customer communication where the defect left the factory. A record with those fields can be read by someone who was not involved, which is the test of whether it is a record or a memory.
Verifying defect handling before production starts
Ask for one real case rather than the procedure.
The most informative question is what happened the last time a batch failed a limit: what was held, what the cause turned out to be, who approved the disposition and what changed afterwards. A factory that can describe a dated case with quantities and a follow-up is describing a process that has run. A factory that answers with a flowchart is describing a document, and the first real defect will be handled by improvisation.
FAQ
What counts as containment?
Holding the affected units in the factory, identifying the lot they came from, and telling whoever already holds units from that lot. It is complete when the units can be located, not when the reply has been sent. Containment is complete when the units can be located rather than when the reply has been sent, and it covers the lot and everyone holding units from it.
Does every defect need a full corrective action report?
No. A defect that reached a customer or repeated across batches justifies a structured report; an internal finding that was caught at the station needs a shorter record with the cause, the change and the verification. What matters is that the batch decision is documented. A structured report suits a defect that reached a customer or repeated across batches, while an internal finding needs a shorter record with the cause, the change and the verification.
Who should decide the batch disposition?
A named person with the authority to hold stock, usually the quality owner on the factory side with the buyer informed. Where nobody can hold a batch, the factory’s quality system has an authority problem rather than a defect problem. A named person with the authority to hold stock, usually the quality owner on the factory side with the buyer informed, is what makes the disposition operate.
How is the fix verified?
On the next batch, against the same measurement that identified the defect, with the result recorded. A fix verified on the units that were reworked proves the rework, not the process. Verify the fix on the next batch against the same measurement that identified the defect, because a fix verified on reworked units proves the rework rather than the process at all.
Next step
Send the product, the channel requirements and the parameters that matter to your programme to Wecent Group through the contact page. The reply returns the defect record format, the containment and disposition rules and an example of a closed case. Related reading: the factory floor, OEM and ODM charger manufacturing and charger manufacturing services. External references: IEC standards, IEC Webstore, UL standards and certification, TUV testing services, Intertek testing services and IQNet certification network.
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