What Board Repair Teaches About Intermittent Failures
What Board Repair Teaches About Intermittent Failures
A connection can work at room temperature and fail after vibration or heat changes its shape.
Connector contacts, solder joints and flexible cables are common places to check when a fault appears and vanishes. Inspection under magnification can reveal damage around mechanically loaded parts.
A useful repair log records the conditions around each failure. Repeating the same operating load and observing the relevant voltages helps narrow the search without replacing every component.
Verification should include several cycles through the conditions that originally caused trouble. A board that passes once on the bench still needs to prove it can run in the enclosure.
