I need to repair a blown fan header on my motherboard!

Q9650 · May 3, 2011, 11:01 AM

I was checking the voltages on my motherboard`s fan header with a digital multimeter and accidentaly i shorted the pins and caused a spark enough to blow it! I need to know if the transistor supplying the +12volts to the fan is still fine or what SMD compnent has been damaged? The traces on the board are still fine so if someone can tell me how to repair it i will be very grateful! the blown fan header is 4pin PWM type.

Q9650 · May 3, 2011, 07:46 PM

here is a screenshot of the blown fan header sys_fan2.

Note: this is not a screenshot of my actual board (board is a gigabyte GA-EP45T-UD3P) i got it from google

streetfighter 2 · May 3, 2011, 08:17 PM

Did you try plugging a fan into it?

Q9650 · May 4, 2011, 05:32 AM

yes both 3pin and 4pins fans don`t spin! the header still reads the rpm speed but someone on other forums told me the mosfet transistor or the cap maybe be damaged and need to be replaced

Q9650 · May 5, 2011, 10:34 AM

OK !!! i did it!! i replaced the mosfet transistor and now the fan header is back ..it`s alive it`s alive!!!

Chryonn · May 5, 2011, 08:36 PM

Hey, well done. you've got more courage than i in that situation. glad to know it's all working fine again

Q9650 · May 5, 2011, 09:07 PM

Quote:

Originally Posted by Chryonn

Hey, well done. you've got more courage than i in that situation. glad to know it's all working fine again

Thanks man! It was abit hard to solder the new mosfet as it was very tight next to the sata connector but everything is fine now!

OneMoar · May 7, 2011, 02:16 AM

/me would have just bought a 4pin ATX molex to fan adapter

May 3, 2011, 11:01 AM	#1
Q9650 Join Date: Sep 2008 Posts: 112 (0.07/day) Thanks: 17 Thanked 10 Times in 10 Posts System Specs	I need to repair a blown fan header on my motherboard! I was checking the voltages on my motherboard`s fan header with a digital multimeter and accidentaly i shorted the pins and caused a spark enough to blow it! I need to know if the transistor supplying the +12volts to the fan is still fine or what SMD compnent has been damaged? The traces on the board are still fine so if someone can tell me how to repair it i will be very grateful! the blown fan header is 4pin PWM type.

System Name:	XTREME CORE
Processor:	Intel Core2QUAD Q9650 OC`ed @ 4Ghz 1.265v
Motherboard:	Gigabyte GA-EP45T-UD3P Rev 1.0
Cooling:	Corsair H100 CPU Water Cooler
Memory:	4x2GB Corsair XMS3 DHX DDR3 1600mhz
Video Card:	EVGA GeForce GTX 460 SC EE 1024MB
Hard Disk:	1x OCZ Vertex 2E 60GB SSD, 1x Samsung SpinPoint F3 500GB
Optical Drive:	Samsung SH-S223L Internal 22x SATA DVD Writer
CRT/LCD Model:	LG Flatron 22inch L226WTQ
Case:	CM Storm Sniper Black Edition
Sound Card:	Onboard
PSU:	Corsair HX850W Modular PSU
Software:	Windows 7 Ultimate SP1 64bit

System Name:	XTREME CORE
Processor:	Intel Core2QUAD Q9650 OC`ed @ 4Ghz 1.265v
Motherboard:	Gigabyte GA-EP45T-UD3P Rev 1.0
Cooling:	Corsair H100 CPU Water Cooler
Memory:	4x2GB Corsair XMS3 DHX DDR3 1600mhz
Video Card:	EVGA GeForce GTX 460 SC EE 1024MB
Hard Disk:	1x OCZ Vertex 2E 60GB SSD, 1x Samsung SpinPoint F3 500GB
Optical Drive:	Samsung SH-S223L Internal 22x SATA DVD Writer
CRT/LCD Model:	LG Flatron 22inch L226WTQ
Case:	CM Storm Sniper Black Edition
Sound Card:	Onboard
PSU:	Corsair HX850W Modular PSU
Software:	Windows 7 Ultimate SP1 64bit

May 3, 2011, 08:17 PM	#3
streetfighter 2 Join Date: Jul 2010 Location: Philly Posts: 1,599 (1.55/day) Thanks: 1,004 Thanked 765 Times in 539 Posts System Specs	Did you try plugging a fan into it? __________________ [How hot are your mosfets?] [Internet Privacy]

System Name:	Primary Rig
Processor:	Phenom II X4 B50 @ 3.7GHz
Motherboard:	Biostar TA790GX 128M
Cooling:	Sunbeam CR-CCTF 120mm , 6x120mm, MOS-C1
Memory:	2x2GB Kingston HyperX 1066 @ 800 4-4-4-12
Video Card:	Sapphire HD 5830 800/1000 @ 885/1225
Hard Disk:	320GB, 400GB, 500GB, 1.5TB
CRT/LCD Model:	Hannspree HF259
Case:	CM 690
PSU:	OCZ 850W
Benchmarks:	3Dmark06: 18545/5219 CPU Mark 7.0: 3911.2 Cinebench R10: 11826/3359 x264 HD 2.0: 75.6/23.9

May 3, 2011, 07:46 PM	#2
Q9650 Join Date: Sep 2008 Posts: 112 (0.07/day) Thanks: 17 Thanked 10 Times in 10 Posts System Specs	here is a screenshot of the blown fan header sys_fan2. Note: this is not a screenshot of my actual board (board is a gigabyte GA-EP45T-UD3P) i got it from google

May 4, 2011, 05:32 AM	#4
Q9650 Join Date: Sep 2008 Posts: 112 (0.07/day) Thanks: 17 Thanked 10 Times in 10 Posts System Specs	yes both 3pin and 4pins fans don`t spin! the header still reads the rpm speed but someone on other forums told me the mosfet transistor or the cap maybe be damaged and need to be replaced

May 5, 2011, 10:34 AM	#5
Q9650 Join Date: Sep 2008 Posts: 112 (0.07/day) Thanks: 17 Thanked 10 Times in 10 Posts System Specs	OK !!! i did it!! i replaced the mosfet transistor and now the fan header is back ..it`s alive it`s alive!!!

May 5, 2011, 08:36 PM	#6
Chryonn Join Date: Feb 2008 Location: London, England Posts: 1,013 (0.53/day) Thanks: 24 Thanked 98 Times in 90 Posts System Specs	Hey, well done. you've got more courage than i in that situation. glad to know it's all working fine again __________________ Ever wanted to add LEDs but didn't know the correct voltage and resistance? www.ledcalc.com - everything you need to light up your PC's insides “Join me.. we will be alone in the dark for a few thousand hours... together.” -Ketxxx

System Name:	Le Don
Processor:	Core i 5 2500K Unlocked 3.3GHz HD Graphics 3000
Motherboard:	Asus P8P67 Pro B3 Revision Rev 3.1
Cooling:	Arctic Freezer Pro 7 Rev.2
Memory:	8Gb Corsair DDR3 (CMZ8GX3M2B1600C9), 1600MHz, 1.5V, 9-9-9-24
Video Card:	EVGA Signature 2 Super Clocked GTX680 2GB
Hard Disk:	Total 6 TB storage
Optical Drive:	Samsung 22x DVD Light Scribe DVD-+RW
CRT/LCD Model:	LG 23" D2342P and LG 42" 42LF65 LCD (Wall mounted)
Case:	Antec P180 Silver
Sound Card:	Audigy 2 ZS Platinum Pro
PSU:	Corsair 850HX
Software:	Windows 7 Ultimate 64-bit,

May 7, 2011, 02:16 AM	#8
OneMoar Join Date: Apr 2010 Posts: 2,266 (1.99/day) Thanks: 89 Thanked 426 Times in 365 Posts System Specs	/me would have just bought a 4pin ATX molex to fan adapter __________________ I am not here to be nice, I am not here to be polite BUT I am here to help ...

System Name:	Waiting For Haswel
Processor:	Phenom II @ 4.0Ghz @ 1.480v 2600NB/1.25v
Motherboard:	MSI 990XA-GD55
Cooling:	Mugen RevB
Memory:	8GB DDR3 @ 1600
Video Card:	ATi 6870 @ 940/1100
Hard Disk:	WDBLUE 250GB && WD BLACK 500GB
Optical Drive:	x1 DVD
CRT/LCD Model:	HP w2071d
Case:	NZXT GAMMA
Sound Card:	RealtekHD
PSU:	Antec 520c
Software:	Windows 7 x64

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