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Thread: What causes the primary failure?

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    Default What causes the primary failure?

    I've seen a blown up APFC fets recently, what are the main causes of primary failure?

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    Quote Originally Posted by rgbodosk View Post
    I've seen a blown up APFC fets recently, what are the main causes of primary failure?
    Poor design. Garbage components. Using under spec components and then lying about the PSU's capabilty. High temperatures. Poor mains voltage. People constantly flipping the PSU's power switch off and on every time they leave the room......

    Shall I keep going?

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    Yes indeed it was a stupid question

    But what do you mean filpping switch on and off? Inrush currents?\
    + Oh saw the other post you wrote. Does 'detaching and attaching the plug' do the same thing? Well this was a stupid question too - yes.

    So you mean it is not good to 'cut' the mains in every way? Is there any safe way to do that?

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    Quote Originally Posted by rgbodosk View Post
    I've seen a blown up APFC fets recently, what are the main causes of primary failure?
    Can also be due to dying or dead main capacitor for example...

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