TC 9-62
TROUBLESHOOTING - a method of detecting and repairing problems in
electronic equipment. Two methods commonly used are the visual check and
signal tracing. The visual check allows a quick check of component problems
(such as shorts, discolored or leaky transformers, loose or broken connections,
damaged resistors or capacitors, smoking parts, or sparking). The signal
tracing method is used when the problem cannot be seen using the visual
check. Therefore, test equipment needs to be used to observe the electron
signal. Component failure is also important in troubleshooting. In transformers
and chokes a winding can open, two or more turns of one winding can short
together, a winding can short to the casing that is usually grounded, and
windings (primary and secondary) can short together. A capacitor can open up
or it may develop an internal short circuit. A resistor can open, increase in
value, or decrease in value.
4-52
TC 9-62
23 June 2005
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