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The Blues for LEDs

Posted by ryuzaki0 on from the if-thats-your-biggest-problem-you're-doing-allright dept.

Corey Burger writes "Seems somebody rolled out of bed on the wrong side today. The Globe and Mail's Ian Johnson delivers up a rant about the ubiquity of the new blue LEDs."

2 of 475 comments (clear)

  1. Re:Why by ejaw5 · · Score: 5, Informative

    Even better:

    1. Disassemble device
    2. Locate offending LED
    3. Apply heat (solder iron) and remove LED
    4. If so desired, replace it with an LED of different color using the solder iron and resin.
    5. Reassemble device

    --

    $cat /dev/random > Sig
  2. Re:Why by Anonymous Coward · · Score: 5, Informative

    4a. Replace corresponding series resistor.

    Blue LEDs typically have a forward voltage greater than standard red/green/yellow ones. If you don't use a correctly-calculated series resistor, a lower voltage LED will receive more current and become a super-high-tech Black LED shortly after powerup.