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How do you check 8 pin mosfet in laptop motherboard by multimetre?
Wiki User
∙ 11y ago
Hello all , My faculty at CHIPTRONIKS told me this :
Get a multimeter with a diode test range.
Connect the meter negative to the MOSFET's source.
Hold the MOSFET by the case or the tab if you wish, it doesn't matter if you touch the metal body but be careful not to touch the leads until you need to. Do NOT allow a MOSFET to come in contact with your clothes, plastic or plastic products, etc. because of the high static voltages it can generate.
First touch the meter positive on to the gate.
Now move the positive meter probe to the drain. You should get a low reading. The MOSFET's gate capacitance has been charged up by the meter and the device is turned on.
With the meter positive still connected to the drain, touch a finger between source and gate (and drain if you wish, it doesn't matter). The gate will be discharged through your finger and the meter reading should go high, indicating a non-conducting device.
Wiki User
∙ 11y ago
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