Multimeter All

Aug 15
2009

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Multimeter All
Multimeter All

how to use multimeter to test if laptop ac charger is working?

Hi all.
I have a laptop which is not turning on, or is there a light on to indicate it is charging. How can i test if there is power running through the ac charger with a multimeter, i want to find out if it is the ac charger is broken or the laptop.

I have never used a multimeter before. It is a digital multimeter.

thanks for any help given!

The output of AC charger is DC so switch the multi to DC voltage. Next there,re two point in the charger output one is (+) and one is (-). connect the (+) to red probe and (-) to black probe.
To determine which point is (+) and which is (-) you can see in the charger body or in the laptop charger input, usually the inside is (+) and the body is (-). If the output indicate 0V measurement means your charger defect. Charger usually can't be repair need to buy new one.

EEVblog #170 - Agilent U1272A Multimeter FAIL

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