Two PC LED?

H47E

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Dec 12, 2013
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Ok, so I have a case DeepCool Tesseract Black, but what's weird that like any other pc case there's the Red LED , which is for HDD, but apparently I have another one, a blue one to be more exact

Now what's weird is that this one stays on for few seconds sometimes even full on minutes then it goes off, very rare though

A0nd yes, the blue LED flickers too

so what is the blue LED for ?
 
Solution
Powering on properly only proves you got the power button wires connected correctly. If both LEDs are flickering, I would guess that there's a defect in the motherboard or case that messes up the electrical connection somewhere in the circuit of the power led. I thought it might be possible to check that with an inexpensive multimeter, but the online guides for testing LEDs with multimeters I found seemed to involve expensive digital multimeters. The LEDs aren't actually required for the computer to operate, so you could just leave them disconnected and they won't light up at all, let alone flicker.
My first guess would be one is for HDD activity and one is for power, but the power led shouldn't be flickering. (though it may flash if your computer goes into sleep/standby mode). The symbols near the leds should give you a hint as to their meaning.
 




Well, thing is most of the time is not on, it gets on randomly, but very rare, it stays for few mins. and done, and yes it is for power, the symbol shows a spiky "S" , like this:

http://ian.umces.edu/imagelibrary/albums/userpics/12789/normal_ian-symbol-dynamic.png

but weird thing is that the case is new so what's the problem then, doubt I messed up the cables otherwise It wouldn't turn on itself randomly
 
Powering on properly only proves you got the power button wires connected correctly. If both LEDs are flickering, I would guess that there's a defect in the motherboard or case that messes up the electrical connection somewhere in the circuit of the power led. I thought it might be possible to check that with an inexpensive multimeter, but the online guides for testing LEDs with multimeters I found seemed to involve expensive digital multimeters. The LEDs aren't actually required for the computer to operate, so you could just leave them disconnected and they won't light up at all, let alone flicker.
 
Solution
hey! I have the same problem with my just bought DeepCool Tesseract... the blue power led worked fine for 2 or 3 days, then started to flick and now is almost all the time off... so I guess they are shity chinese leds for a cheap chinese case...! But a led failure is a shame! They shouldn't save 0,05 dollars buying the cheapest leds in chinatown... :-/
The only fix is to replace the goddamn led with another one!
 
well... I know DeepCool has great products... but it's not the case of the Tesseract case! it's a complete CRAP. Now the two leds are dead! (power & hdd).

Those chinese jerks put the cheapest and crapest leds available in China, Taiwan or some shitty country like these... :-/
 
i have same problem with same cabinet i tested led with normal cell it work but in motherboard it work for few days then its dead but working fine with normal cell.
 


ONLY SOLUTION: what I did, replaced two leds... now I'm happy... fuck you Deep Cool !
 


can you tell me how many V led work ?a link can help me more.