Power-off testing is often necessary to test the
printed circuit assembly (PCA) board due to uncertainty as to the nature of the failure. When the PCA can be further damaged by applying power it is necessary to use power off test techniques to safely examine it. Power off testing includes
analog signature analysis,
ohmmeter, LCR Meter and optical inspection. This type of testing also lends itself well to troubleshooting circuit boards without the aid of supporting documentation such as schematics.
Typical equipment
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Analog signature analysis*
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Huntron Tracker*
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Automated optical inspection
Automated optical inspection (AOI) is an automated visual inspection of printed circuit board (PCB) (or LCD, transistor) manufacture where a camera machine vision, autonomously scans the device under test for both catastrophic failure (e.g. missin ...
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LCR meter
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Machine vision
Machine vision is the technology and methods used to provide image, imaging-based automation, automatic inspection and analysis for such applications as automatic inspection, process control, and robot guidance, usually in industry. Machine vision ...
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Ohmmeter
Printed circuit board manufacturing
Nondestructive testing
Hardware testing
Electricity
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