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Why would a computer single 5mm LED start to flash?

L

LOUISSSSS

Diamond Member
the LED is pretty much the same as this: http://ncix.com/products/index...&manufacture=Bitspower

its a 5mm led with a 4-pin molex tail that goes into the PSU

It has recently started to flash constantly. (it is supposed to be a steady led w/o flashing)

can anyone tell me why this is happening or how i can fix it?
the color on the led is still very bright and its pretty much new (less than 2 weeks of usage)
 
No, a resistor cannot make a LED to flash.

I am very sure your LED is defective. I have experience same thing few times with some other stuff like cheap USB LED lights for reading. They usually stop working for me within 2 weeks as well but usually just within few days.
It?s properly due to low quality leds I think. It?s pretty weird that the led decide the flash rather than stop working or something else but I can?t explain exactly why they tend to do that.

You can fix it by replace the LED either by DIY or simply get a whole new one with molex plug.
I am sure your PSU is fine.
Hope this help.
 
A resistor can definitely make the LED flash - they are carbon based and can interrupt the current. Usually it's a combination of both as the LED is driven too hard (very bad) and the resistor runs too hot breaking down.

NEVER connect an LED directly to the PSU without the correct current limiting resistor or this WILL happen.
 
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