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Case Front Panel LEDs won't burn

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  • Cases
  • Motherboards
  • Components
  • Front Panel
Last response: in Components
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June 27, 2013 9:55:19 AM

I've pulled the manual from the MOBO and this is the directions for plugging in the front panel to the mobo. I have this exactly and my front panel won't light up:



Are my LEDs bad? Can these be easily replaced without having to get a while new case? I know I can run just fine without them, it's just the convenience...

More about : case front panel leds burn

June 27, 2013 9:55:58 AM

The case is a CoolerMaster HAF 912, if that matters.
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a c 96 V Motherboard
June 27, 2013 10:47:02 AM

You can buy individual LEDs with wires to replace faulty ones. But very unlikely to be bad. Without pictures of the actual wiring it is hard to say, but a common problem is to hook them up backwards.

Most commonly they will be blue-white, orange-white, green-white twisted pairs or partially separated ribbon cable. Other common setups are Black and Red twisted pairs. (Some more enthusiast boards are switching to single color)

Generally white and black are the negative leads, and the colored wires the positive. Confirm that you have the colored or positive labeled pins hooked up to the positive pins on the motherboard.

The whole kit if that doesn't work:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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June 27, 2013 10:59:33 AM

I did ensure that I don't have the leads swapped, they are labled at the connectors. As you say, it's a green and white partially seperated ribbon cable. I'm not an enthusiast, or even what I would consider overly proficient. I'm just not an idiot, so I figured I could handle putting together a computer for the first time. Everything else runs (fans, HD, etc.), so I know they're getting power. But when I turn the system on neither the power-on LED or the HD LED lights up (though I suppose the latter could be due to the fact that I've installed nothing on the HDD yet).
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a c 223 V Motherboard
June 27, 2013 11:51:18 AM

Use a voltmeter to determine if the front panel header on the motherboard is putting out more than +2 Volts (i.e. typical LED turn on voltage is between 2 to 3 Volts) on the PLED pins. If the voltage reading is incorrect then the motherboard's front panel header has a problem and replacing the HAF 912's LEDs won't solve anything.
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a c 96 V Motherboard
June 27, 2013 2:15:52 PM

Good point. Though I've not had a motherboard fail in that way before.

Then we are talking RMA and if they don't cross ship, no computer for a while.
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