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

Q9650 · May 3, 2011

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

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

Did you try plugging a fan into it?

Q9650 · May 4, 2011

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

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

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

Chryonn said:
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

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

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(s)	EVGA Signature 2 Super Clocked GTX680 2GB
Storage	Total 6 TB storage
Display(s)	LG 23" D2342P and LG 42" 42LF65 LCD (Wall mounted)
Case	Antec P180 Silver
Audio Device(s)	Audigy 2 ZS Platinum Pro
Power Supply	Corsair 850HX
Software	Windows 7 Ultimate 64-bit,

System Name	RPC MK2.5
Processor	Ryzen 5800x
Motherboard	Gigabyte Aorus Pro V2
Cooling	Enermax ETX-T50RGB
Memory	CL16 BL2K16G36C16U4RL 3600 1:1 micron e-die
Video Card(s)	GIGABYTE RTX 3070 Ti GAMING OC
Storage	ADATA SX8200PRO NVME 512GB, Intel 545s 500GBSSD, ADATA SU800 SSD, 3TB Spinner
Display(s)	LG Ultra Gear 32 1440p 165hz Dell 1440p 75hz
Case	Phanteks P300 /w 300A front panel conversion
Audio Device(s)	onboard
Power Supply	SeaSonic Focus+ Platinum 750W
Mouse	Kone burst Pro
Keyboard	EVGA Z15
Software	Windows 11 +startisallback

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

Q9650

Q9650

streetfighter 2

New Member

Q9650

Q9650

Chryonn

Q9650

OneMoar

There is Always Moar