LED failure, what cause this?




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  1. #1
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    Default LED failure, what cause this?

    Had a strange experience on the weekend with my LED torch. One moment it was fine, the next it discoloured to a strange brown / orange colour. The LED itself seems to have failed. I'm not aware of this type of failure in the LED's and was wondering what can cause this and can it be fixed. Quess I'll need to replace the circuit board.
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  2. #2
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    Default Re: LED failure, what cause this?

    What causes it. Poor design and substandard components.
    Cheers

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    Default Re: LED failure, what cause this?

    The failure of poor components probably caused by an equally poorly designed heat dissipation system for the LED.


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    Default Re: LED failure, what cause this?

    Quote Originally Posted by Fluffy View Post
    What causes it. Poor design and substandard components.
    In a nutshell, yes. Distill whatever happened down to the root cause and you'll find the above conclusion.
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  6. #5
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    Default Re: LED failure, what cause this?

    Quote Originally Posted by Family_Dog View Post
    The failure of poor components probably caused by an equally poorly designed heat dissipation system for the LED.


    -F_D
    Exactly.

    A correctly specified and driven LED is good for over 10 years MTBF. That's a torch that is on for over ten years without failing.

    Lesser manufacturers know a torch is a very intermittent application, so they push the envelope to sell maximum Lumens/Brightness/Illumination/Smoke and Mirrors from a below par LED and circuit design.

    Even if that torch says "CREE", that doesn't guarantee it is a full spec guaranteed CREE. If its cheap, its part of CREE's reject bin. The ones that didn't meet spec in testing.

    And trust me, for high performance LEDS. - EVERY SINGLE LED, millions of them are tested for meeting spec, one by one. I know, I spent weeks in Taiwan doing the testing for my production runs.
    Cheers

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