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Fuse

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Fuse ​

Serves as a Security, if there is a shorting circuit, this component will be broken. On older laptops, the cause of the totally dead laptop is this component on the DC IN circuit. It is designed to protect laptop and save electronic components from being damaged.
fuse.png

fuse SMD.png

SMD Fuse symbolized on motherboard and schematic diagram with the
letter F and sometimes symbolized with two letters like PF, FP and next to it
is a number.

How do you test the fuse?
Set to the buzzer mode to test a fuse with digital meter.
If the fuse is ok it should read .0 or hear a tone (sound), and if the fuse is broken
(internally) there will be no tone (sound). But no tone means open fuse.

FUSE TESTING.png
 
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