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Overview
- In general, faults in PCBs are classified into two basic categories; failures due to components (fault ICs, shorted
diodes or open resistors) and mechanical faults (dry soldering, soldering splashes and broken tracks). The ratio of the
failure varies according to the usage of the boards.
A newly assembled board / badly reworked board is likely to have
mechanical defects whereas a board which has been reliably working for some time may have components failure. A rigorous test
of an IC is of no use, if the fault is a broken/open track leading to an IC pin. In such a test, the IC may pass but tbe board
doesn't work. Similarly, if there is an internal fault, continuity test of all the tracks may be successful but the
board still doesn't work. Hence, it is imperative that an effective trouble shooting/diagnostic system understands the type
of fault before locating the same.
Qmax testers have the ability to analyse 'Inward' to test the components as well as to
look 'Outward' to check the connection to the surrounding circuitry.
- QT8200M is an extremely powerful, PC-based fault finding system, capable of locating faults on a wide range
of electronic PCBs and equipment. It comes with a rugged cabinet designed exclusively for defence military applications.
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