Re: Magnavox DRV power supply SMPS
No way it could have pass the Diode mode test to check S and D if you FOLLOW that instruction.
From your link:
A good MOSFET should have a reading of 0.4V to 0.9V (depends on the MOSFET type). If the reading is zero, the MOSFET is defective. When the reading is “open” or no reading, the MOSFET is also defective.
When you reverse the DMM probe connections, the reading should be “open” or no reading for a good MOSFET. If the reading is zero, the MOSFET is defective.
Step #2 on How to Know if MOSFET is Defective
:Resistance Check
The next method to use on how to know if MOSFET is defective is to conduct a resistance check. A good MOSFET should have high resistance between drain-source regardless of the DMM probe polarity.
Originally posted by johnfin
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From your link:
A good MOSFET should have a reading of 0.4V to 0.9V (depends on the MOSFET type). If the reading is zero, the MOSFET is defective. When the reading is “open” or no reading, the MOSFET is also defective.
When you reverse the DMM probe connections, the reading should be “open” or no reading for a good MOSFET. If the reading is zero, the MOSFET is defective.
Step #2 on How to Know if MOSFET is Defective
:Resistance Check
The next method to use on how to know if MOSFET is defective is to conduct a resistance check. A good MOSFET should have high resistance between drain-source regardless of the DMM probe polarity.
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