Understanding The Diversity Amidst Repair and Rework



In the context of manufacturing, the difference between PCB repair and rework have become a talk of the town with much discussion and confusion. The only reason behind this is due to numerous industry specifications, which are rarely written in simple English and more jargon and legalese.
If you google to know the difference between repair and rework, you will not just get one but an immense array of answers. According to the recent study, the difference between repair and rework is much simpler than anything.

Let us first understand the about of Repair and Rework.

Bringing a non-conforming part back into conformance by simply reprocessing a prior sequence is known as rework, whereas using methods outside the original process is known as repair.
Let us now review two synopses of non-conformance.

Illustration of Rework

At the process inspection, drilled hole is found to be .005 undersized at the sequence of 25; however, the root cause was determined due to worn or wrong size drill by the engineer. It involves changing drill bit and reprocessing sequence 15 and continue router from that point. Further, it is also considered as rework, as you are simply redoing a process accurately.

Illustration of Repair

Well at the final inspection, the drilled hole is found to be .005 undersized at the sequence of 35. Here, the root cause was again determined worn or wrong size drill by the engineer — however this time the part was found in an abandoned state. Therefore, by adding a sequence, the engineer must repair, and not on the original router.

With the introducing of the new process, the Engineer must soften material using the thermal method called annealing, before reprocessing sequence 25. It would be considered a repair.

Hence, this simple explanation will fit the machining process the best. It is best to know your definition of repair and rework, as each industry and situation has its nuanced.

PCC offers fast turnaround Printed Circuit Board Assembly Repair and Rework services in an entirely controlled ESD compliant facility. Adhering to IPC and JEDEC artistry standards, we specialize in both assembled and open circuit board repair and rework. We have a skilled workforce who are regularly trained and continually assessed by our in-house certified trainers.
Our facilities are AS9100C & ISO 9001:2008 accredited. We have the most advanced computer controlled PCA, and BGA reworks stations that ensure the accuracy of work. Our portfolio of global customers, OEM companies along with our 27+ years of experience, validates our reliability as a leading PCA Repair and rework service provider.

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