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8303 Views 1 Reply Latest reply: Jan 24, 2013 10:04 AM by Spider99 RSS
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Jan 22, 2013 1:27 PM

Burned Out Transistor

What's the best way to determine if my transitor is burnt out in circuit??

  • Spider99 Novice 6 posts since
    Feb 24, 2012
    Currently Being Moderated
    Jan 24, 2013 10:04 AM (in response to SariTheGeek)
    Burned Out Transistor


    If the smoke gets out, it is time to replace it.


    With no power applied to the circuit.

    Set your digital ohm meter to the diode setting. Put the positive lead on the base of the transistor. Put the negative lead on the emitter and then the collector. Note the reading. If greater than .7 all is ok.

    Now reverse the positive and negative meter leads. Do the same test. If the readings are greater than .7 all is ok. However, one of these tests pairs should be close to .7. If not then compair to a known good transistor.

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