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Vcore VMod for Gigabyte G31M-ES2L - Page 3

post #21 of 50
Thread Starter 
Quote:
Originally Posted by CL3P20 View Post
o scope is for examining wave structure.. not actual voltage dont think you can..
Rage. Guess I'll have to wait.
    
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post #22 of 50
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EDIT. Found it.
Edited by MR KROGOTH - 6/3/11 at 5:24am
    
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post #23 of 50
Thread Starter 
Hate to bump within 24 Hours, but ive found the mosfet that control the FSB Voltage


The red arrow! There you go Cl3p2o!
Edited by MR KROGOTH - 6/3/11 at 5:29am
    
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post #24 of 50
I actually guessed that was the fet for either FSB or MCH.. thats not really a question.. we need to trace that fet to a control IC.. [which i dont see]. If the fet is being direct fed..and not controlled by an IC.. it will be much harder to locate the mod area.
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post #25 of 50
Thread Starter 
Quote:
Originally Posted by CL3P20 View Post
I actually guessed that was the fet for either FSB or MCH.. thats not really a question.. we need to trace that fet to a control IC.. [which i dont see]. If the fet is being direct fed..and not controlled by an IC.. it will be much harder to locate the mod area.
I'll be taking the board out today, to Add some heatsinks some the Mosfets around the CPU area (from what I understand, its only a 3 phase board for a 130w+ CPU) and from there I'll look at the traces for the IC.

EDIT: Also, the input to that fet is only 5v~
    
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post #26 of 50
cool the inductor coils with sinks as well... they will get hotter than the fets

*as for the FSBv.. it looks like the fet for FSBv is direct fed..which means we arent going to be able to change its output value.


**and lolz.. I used to be the benchmarks editor
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post #27 of 50
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Quote:
Originally Posted by CL3P20 View Post
cool the inductor coils with sinks as well... they will get hotter than the fets

*as for the FSBv.. it looks like the fet for FSBv is direct fed..which means we arent going to be able to change its output value.
I'll look at it. I wont give up that easy. There must be a way!
    
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post #28 of 50
it could be controlled be a single resistor [if BIOS allows more than FSBv... then it can move]

if this is the case.. you will need to 'tone' out a resistor that is connected to the input leg of the fet on 1x side..and ground on the other side.

**you must do this with no power to the board or you will blow something sniffing resistance and continuity.
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post #29 of 50
Thread Starter 
Quote:
Originally Posted by CL3P20 View Post
it could be controlled be a single resistor [if BIOS allows more than FSBv... then it can move]

if this is the case.. you will need to 'tone' out a resistor that is connected to the input leg of the fet on 1x side..and ground on the other side.

**you must do this with no power to the board or you will blow something sniffing resistance and continuity.
Iv'e done the bolded before. Killed my E2200

After this install is finished it'll come out, High-res pics taken, and mods completed. Is there any way to know how much voltage will be the end product? Or will it be guesswork for now?
    
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post #30 of 50
If you locate a resistor that appears to connected to the fet.. measure the original resistance value.. then pencil down a small amount and boot to check for change.

ie:

oem R = 1.38ohms
pencil R = 1.28-1.35ohms

..You should be able to see some change within the first few ohms of the original value..

*you can pencil while running.. just be careful when measuring at the fet again for voltage.. best to unplug HDD and externals and just sit in BIOS or at DOS screen when doing the above "live"
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