how the!?

Intrepid · 08-05-02, 06:35 PM

I have this side fan running in my case, it's ben running for a while now and this is how it's power is set up. I found this out when I tried to test it on my micro atx psu when thte side fel off riping a wire out of the fan, i looked at it snad man...this just aint right! but it was worknig fine in my case! And there is no speical reciever plug I know this beccasue I hocked it up myself! The molex wireing for the fan I did nto look at however...

Diggrr · 08-05-02, 06:42 PM

Yep, you've accidently done the 7 volt mod to it. (though backwards from the usual configuration)

If you plugged the fan in the correct way, using yellow to red, and black to black, it'll get faster, louder and push more air.

SniperXX · 08-05-02, 06:44 PM

Diggrr is right.

mrm1957 · 08-05-02, 06:47 PM

Go to the overclockers.com home page at the bottom they have an article on their to do 7 volt mods

Intrepid · 08-05-02, 06:54 PM

no there is no 7v mod on my psu or wireing. this is a normal psu lpug in directly from the psu

Diggrr · 08-05-02, 07:00 PM

Oh no, I don't mean that the power supply plugin is set wrong, I mean that is what is refered to as the 7 volt mod, by plugging in the fan wires that way to a power supply plug. Mixing +5 and +12 gives you +7 volts (sounds screwy, but it's true).

If it's a molex plug on the fan wires, then you can remove the metal pins and rearrange them in the plastic to return it to 12 volt operation.

Intrepid · 08-05-02, 10:30 PM

I mean there is a yellow and red wire from the PSU giving the fan juice, no neutral or ground whatsoever on the fan...I moded it so it is corectly wired now and it works again, why it stoped working, after it WAS working like that i dunno....

cipherpunk · 08-06-02, 05:39 PM

Alright, I'll try to explain this...
Usually, your fan would be running at 12 volts (0 and +12, a difference of 12 volts). The way you had it plugged in, it was using the +5 and +12 wires, so it was running at 7 volts (+5 and +12, a difference of only 7 volts). Your fan doesn't run _optimally_ at that temperature, but it does run, slower, so therefore less air movement and less noise, as diggrr said.
-Cipherpunk

Intrepid · 08-06-02, 06:57 PM

dosent it need to be connected to a neutral or black wire tho?

08-05-02, 06:35 PM	Thread Starter #1
Intrepid Member Join Date: Jun 2002 Location: Boise, ID, USA	how the!? I have this side fan running in my case, it's ben running for a while now and this is how it's power is set up. I found this out when I tried to test it on my micro atx psu when thte side fel off riping a wire out of the fan, i looked at it snad man...this just aint right! but it was worknig fine in my case! And there is no speical reciever plug I know this beccasue I hocked it up myself! The molex wireing for the fan I did nto look at however... __________________ .......OOOOOO.......******************************** ......O......O......****************************** .....O.SSSSSS.O.....****************************** ....O.S......S.O....****************************** ...O.S..U..U..S.O...****************************** ..O...S.U..U...S.O..****************************** .O......USSU......O.****************************** ..O.S...U..U.S...O..****************************** ...O.S...UU...S.O...****************************** ....O.S......S.O....****************************** .....O.SSSSSS.O.....****************************** ......O......O......****************************** .......OOOOOO.......********************************
	QUOTE Thanks

08-05-02, 06:42 PM	#2
Diggrr Underwater Senior Member Join Date: Nov 2001 Location: Gun Lake, MI. USA	Yep, you've accidently done the 7 volt mod to it. (though backwards from the usual configuration) If you plugged the fan in the correct way, using yellow to red, and black to black, it'll get faster, louder and push more air. __________________ Rig1: C2D E8400 @3510 Ф Asus P5G41T-M-LX Plus mobo Ф 8 Gigs Ballistix DDR3 1333 Ф Asus GT520 Silent Ф 4 Deep Cool 92mm case fans Ф FSP 1U 460 Watt PSU External Watercooling: 40' Copper Coil Geothermal ground loop Ф Cooling modded MCP350 & MCP355 W/Swiftech white dual pump top Ф D-Tek Fuzion V2, 1/4" Rig2: Via Esther C7 1.5 @ 1.65 Ф Jetway 7F2WE1G5D mITX mobo Ф 1 Gig Generic Ram (max) Ф 120 watt Pico PSU. Life's Tragedy is that we get old too soon and wise too late. ~ Benjamin Franklin
	QUOTE Thanks

08-05-02, 06:44 PM	#3
SniperXX Member Join Date: Jul 2002 Location: Folding in Diamond Bar	Diggrr is right. __________________ i7 920 @ 4.2Ghz Asus Rampage II GENE 2x BFG GTX285 6GB Crucial Dominator 1600 Crucial 750TX Help find cures for cancer by running Folding @ Home. HEATWARE
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08-05-02, 06:47 PM	#4
mrm1957 Member Join Date: Apr 2002 Location: Camp Lejeune, North Carolina	Go to the overclockers.com home page at the bottom they have an article on their to do 7 volt mods __________________ AMD Athlon XP 1600 AGOIA @ 1755 Epox 8HKA+ SLK900/ Sunon 50 CFM AMD Athlon XP 2100 AIUHB @ 2090 Shuttle AK35GT2 SLK800/ Sunon 50 CFM AMD Sempron 2500 @ 1750 MSI M7NCD NF2 AMD Athlon XP 2100 AIUHB @ 1730 Asus A7V400-MX AMD Athlon XP 2700 @ 2325 Abit NF7v2.0 SLK 900 "Allright you Devil Dogs let's take that folding hill" FOLDING @ HOME TEAM 32 Enlist for Team 32 here Heatware
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08-05-02, 06:54 PM	Thread Starter #5
Intrepid Member Join Date: Jun 2002 Location: Boise, ID, USA	no there is no 7v mod on my psu or wireing. this is a normal psu lpug in directly from the psu __________________ .......OOOOOO.......******************************** ......O......O......****************************** .....O.SSSSSS.O.....****************************** ....O.S......S.O....****************************** ...O.S..U..U..S.O...****************************** ..O...S.U..U...S.O..****************************** .O......USSU......O.****************************** ..O.S...U..U.S...O..****************************** ...O.S...UU...S.O...****************************** ....O.S......S.O....****************************** .....O.SSSSSS.O.....****************************** ......O......O......****************************** .......OOOOOO.......********************************
	QUOTE Thanks

how the!?

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08-05-02, 07:00 PM	#6
Diggrr Underwater Senior Member Join Date: Nov 2001 Location: Gun Lake, MI. USA	Oh no, I don't mean that the power supply plugin is set wrong, I mean that is what is refered to as the 7 volt mod, by plugging in the fan wires that way to a power supply plug. Mixing +5 and +12 gives you +7 volts (sounds screwy, but it's true). If it's a molex plug on the fan wires, then you can remove the metal pins and rearrange them in the plastic to return it to 12 volt operation. __________________ Rig1: C2D E8400 @3510 Ф Asus P5G41T-M-LX Plus mobo Ф 8 Gigs Ballistix DDR3 1333 Ф Asus GT520 Silent Ф 4 Deep Cool 92mm case fans Ф FSP 1U 460 Watt PSU External Watercooling: 40' Copper Coil Geothermal ground loop Ф Cooling modded MCP350 & MCP355 W/Swiftech white dual pump top Ф D-Tek Fuzion V2, 1/4" Rig2: Via Esther C7 1.5 @ 1.65 Ф Jetway 7F2WE1G5D mITX mobo Ф 1 Gig Generic Ram (max) Ф 120 watt Pico PSU. Life's Tragedy is that we get old too soon and wise too late. ~ Benjamin Franklin
	QUOTE Thanks

08-05-02, 10:30 PM	Thread Starter #7
Intrepid Member Join Date: Jun 2002 Location: Boise, ID, USA	I mean there is a yellow and red wire from the PSU giving the fan juice, no neutral or ground whatsoever on the fan...I moded it so it is corectly wired now and it works again, why it stoped working, after it WAS working like that i dunno.... __________________ .......OOOOOO.......******************************** ......O......O......****************************** .....O.SSSSSS.O.....****************************** ....O.S......S.O....****************************** ...O.S..U..U..S.O...****************************** ..O...S.U..U...S.O..****************************** .O......USSU......O.****************************** ..O.S...U..U.S...O..****************************** ...O.S...UU...S.O...****************************** ....O.S......S.O....****************************** .....O.SSSSSS.O.....****************************** ......O......O......****************************** .......OOOOOO.......********************************
	QUOTE Thanks

08-06-02, 05:39 PM	#8
cipherpunk New Member Join Date: Jul 2002 Location: Ottawa, Canada	Alright, I'll try to explain this... Usually, your fan would be running at 12 volts (0 and +12, a difference of 12 volts). The way you had it plugged in, it was using the +5 and +12 wires, so it was running at 7 volts (+5 and +12, a difference of only 7 volts). Your fan doesn't run _optimally_ at that temperature, but it does run, slower, so therefore less air movement and less noise, as diggrr said. -Cipherpunk
	QUOTE Thanks

08-06-02, 06:57 PM	Thread Starter #9
Intrepid Member Join Date: Jun 2002 Location: Boise, ID, USA	dosent it need to be connected to a neutral or black wire tho? __________________ .......OOOOOO.......******************************** ......O......O......****************************** .....O.SSSSSS.O.....****************************** ....O.S......S.O....****************************** ...O.S..U..U..S.O...****************************** ..O...S.U..U...S.O..****************************** .O......USSU......O.****************************** ..O.S...U..U.S...O..****************************** ...O.S...UU...S.O...****************************** ....O.S......S.O....****************************** .....O.SSSSSS.O.....****************************** ......O......O......****************************** .......OOOOOO.......********************************
	QUOTE Thanks

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