It is very import for a technician to identify the fault in the microwave oven. Wrong identification of fault will lead to waste of time and money and it can also causes damage to appliance. Some basic steps which need to be followed during fault identification are:
Diagnose the fault, based on customer interaction and initial inspection.
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Disconnect the power source and check for voltage at the outlet.
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Inspect the cord for any damage or burn marks.
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Remove the outside she'll of the microwave.
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Unscrew the screws underneath and on the back that hold the shell in place and slide it off.
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Carry out basic tests such as power supply inspection, volt Ampere test and earth test.
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Separate and inspect every module of the unit if the fault is not identified through basic tests.
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Place a probe on each component. Check the reading.
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