Performing final tests on electronic boards is very important to maintain the quality and reliability of the product and its manufacturer/supplier.

Reworking a final product, even more so when it is an electronic board, reduces the chances of a successful repair. When soldering or unsoldering a component, you end up damaging tracks and islands, to the point that repair becomes practically impossible.

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Therefore, it is advisable to test ALL boards before delivery to the final customer. Each test is unique and unique to each product. They are carried out by exclusive test jigs, which test the software and hardware of the boards.

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Most of the jigs are developed by the customers themselves, as they are the ones who own the projects for the plates and know, in detail, the application of each product. It is also the customer who defines, among the various existing methods for testing a board, which will be required for use by the manufacturer/supplier.
 

Among these existing methods, the following stand out:​

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FUNCTIONAL TESTS
Functional Tests are of paramount importance to the end customer. They are carried out with the PCBA fully assembled, but before the final integration of the product.

The objective is to verify its functioning and its main functionalities, preventing possible errors from only being noticed when these boards are integrated and already on the client, causing inconvenience and unnecessary costs.

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BOUNDARY SCAN
It is an integrated method for testing interconnections on printed circuit boards. Boundary scan is also used as a debugging method to observe states of integrated circuit pins, measure voltage or analyze sub-blocks within an IC.

TESTS WITH A BED OF NAILS
By means of machinery that works with jigs and needles, this test method is capable of taking measurements at specific points on the PCBA. This testing model can also rely on the help of traditional equipment, such as multimeters and oscilloscopes.

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By using at least one of these methods in Board Tests, the chances of the end customer receiving a product with problems or failures are considerably reduced.

The non-rework guarantee gives the manufacturer/supplier a positive indication of the quality and reliability standard for its customers and meets current market requirements.

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Fernando Fritsch, MyEMS Industrial Director