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Published on 09 May 2012 | over 4 years ago

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I demonstrate how to test a diode and transistor (NPN and PNP) to assist with trouble shooting / fault finding an electronic circuit board.
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This is a video tutorial on how to test an NPN and PNP transistor.

* Fluke 115 digital multimeter with diode test.
* Electronic diagram and symbols of PNP, PNP transistors and diode.
* How to fix a circuit board.
* S8050 NPN transistor, C639 NPN transistor, C640 PNP transistor
* forward bias 0.3 volt to 0.8 volt, reverse bias open circuit OL on multimeter.

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