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My mobo's "fried" part...

post #1 of 2
Thread Starter 
after a week i went home and turned my pc on, but suddenly i smelt sumthing burning, (no display, no beep sound)



the red circle indicates the burned part.

what is this part for? will my mobo still work?

EDIT : this is exactly what my mobo is, i just got the pic from google coz i can't take a picture on my actual mobo
    
CPUMotherboardGraphicsRAM
Core i3 2100 @ 3.1 GHZ ECS H61h2-m12 HD 7950 8GB ddr3 1333mhz Transcend 
Hard DriveCoolingOSOS
Western Digital Caviar Blue 500GB Stock coolers ; Air cool Windows 8 Release Preview Windows 7 
PowerCaseMouse
Cougar ST-550 Caseless  Thermaltake Ryujin Gaming Mouse 
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CPUMotherboardGraphicsRAM
Core i3 2100 @ 3.1 GHZ ECS H61h2-m12 HD 7950 8GB ddr3 1333mhz Transcend 
Hard DriveCoolingOSOS
Western Digital Caviar Blue 500GB Stock coolers ; Air cool Windows 8 Release Preview Windows 7 
PowerCaseMouse
Cougar ST-550 Caseless  Thermaltake Ryujin Gaming Mouse 
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post #2 of 2
    That picture is a bit small!  Looking closely, that is one of the mosfets for the bucking converter that converts 12v down to 1.2v (or whatever voltage is needed exactly) for the CPU.  Looks like the motherboard has a 5 phase bucking converter for the CPU (I count 10 mosfets and 5 inductors in the circuitry for the CPU's bucking converter).



    As far as the motherboard working again, I'm not sure.  Since mosfets usually short when they fail, the faulty mosfet has to be removed (desoldered) before there is any chance the motherboard will work again.  However, the lack of a phase will increase the stress on the remaining 4 phases.  And why did a mosfet blow in the first place?  What's at stake here is the CPU; these mosfets have the ability to burn out the CPU by supplying too much power.
My desktop PC
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-3770K Gigabyte P67A-D3-B3 NVIDIA GeForce 8400 GS  1x Corsair 8 GB 
Hard DriveHard DriveHard DriveOS
Kingston SV300S3 WesternDigital WD10EZEX Samsung HD154UI Windows 7 Ultimate SP1 x64 
MonitorMonitorKeyboardPower
Daewoo L947BK Gateway FPD1530 HTK-2001 Dynex DX-400WPS 
MouseAudio
Kensington K72400 Realtek ALC889 
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My desktop PC
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-3770K Gigabyte P67A-D3-B3 NVIDIA GeForce 8400 GS  1x Corsair 8 GB 
Hard DriveHard DriveHard DriveOS
Kingston SV300S3 WesternDigital WD10EZEX Samsung HD154UI Windows 7 Ultimate SP1 x64 
MonitorMonitorKeyboardPower
Daewoo L947BK Gateway FPD1530 HTK-2001 Dynex DX-400WPS 
MouseAudio
Kensington K72400 Realtek ALC889 
  hide details  
Reply
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