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Old 02-14-2011
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Default can anyone help me figure out what this is?

What we are supposed to be looking at is the little triangular black thing to the right of the pwr fan header. It's supposed to be square, but the corner popped off 1 day and I'm not exactly sure how.

The pwr fan no longer works. And since there is 1 of those next to almost every other fan header I figure that is the cause.

Does that thing have any other purpose though? The board works fine except it has a cold bug and dual channel doesn't seem to work with long term LN2.

Anyways I need to know because I have to sell some stuff and don't want to be selling junk.

Thanks for reading
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File Type: jpg pwr fan header.jpg (365.0 KB, 7 views)
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Old 02-14-2011
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Its a MOSFET

Controls the power to the fan header.
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Old 02-14-2011
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I was hoping that was all it was.

I forgot to mention it's the CHIV.
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Old 02-14-2011
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Yuck. How did it break off?

Also could you get me the numbers off of one of the good ones? I would be interested in seeing the maximum wattage it supports
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Old 02-14-2011
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I try to NEVER hook fan headers to the mobo, dunno if its my luck or not but seems like them stupid fan headers kill mobos faster than a -192c 2.ovolt Overclock does.
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Old 02-14-2011
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Interesting Kal, ty.

One day, IIRC, I was unplugging the fan maybe from a weird angle and it just popped off of there. I don't see how I physically touched it, but I know that was what I was doing when it popped off. I see no signs of electrical burn there. It was weird.

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Last edited by ny_driver; 02-14-2011 at 06:49 PM.
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Old 02-15-2011
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Quote:
Originally Posted by Kal-EL View Post
I try to NEVER hook fan headers to the mobo, dunno if its my luck or not but seems like them stupid fan headers kill mobos faster than a -192c 2.ovolt Overclock does.
Fact. I don't use them either. Most headers will only support 1/2 an amp for fans even though most manufacturers say they're good for 1 amp. I've killed too many good boards because of this. I make it a point to hook all fans directly to the PSU or a controller now.
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Old 02-15-2011
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From now on I'll not hook them to the board. How many volts do regular fans need?
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Old 02-15-2011
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Quote:
Originally Posted by ny_driver View Post
From now on I'll not hook them to the board. How many volts do regular fans need?
12 for full speed. Some will run under 5V though. Usually the ones that run very low still need a higher startup voltage.

Most fans will fall into the .15-.25 A range. with beefier ones hitting .25-.6

Then of course you have the "never designed for a PC" Fans that people like to strap to heatsinks and stuff the Amperage can really shoot up on them
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Old 02-15-2011
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I use a little 400w psu I cannibalized out of my old dell for fan duties. Don't plug anything into the motherboard headers anymore.
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