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Thread: faulty triac?

  1. #1
    andrew2022 Newbie
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    Mar 2004
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    Default faulty triac?

    i have a dimmer light what is permantly on, no matter what the dimmer is set to. i have taken it apart and there is a small circuit inside. could it be the triac (btb04) causing the problem?


  2. #2
    spuffock Okay
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    Oxfordshire, England
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    pick 2 pins and short them together. Lamp stays on? pick another 2. If all 3 combinations leave the lamp on, then the triac is shot.

  3. #3
    andrew2022 Newbie
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    Mar 2004
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    newcastle, UK
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    Quote Originally Posted by spuffock
    pick 2 pins and short them together. Lamp stays on? pick another 2. If all 3 combinations leave the lamp on, then the triac is shot.

    tried that and it stayed on. will get a new triac. thanx

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