Question about Intel Motherboard

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Motherboard not powering up

This is regardng the below suggestion you gave earlier:
hi this is parveen smsc LPC47M172 IC near ddr ram slots count pins and short pin no 92 and 93 both and the motherboard power on and start giving display this method working 98% only 2% change the smsc PC47M172 ic . when mother not powering up than this smsc chip is faulty .

Instead of shorting these pins on SMSC, can we short the green and black wires in ATX 20/24 pin power connector.


Posted by bobyal on

  • bobyal Sep 21, 2008

    Thank you, Parveen.

    I did implement the solution. However I am not so skilled with soldering, hence used a magnifying glass to closely observe and bend the pins 92 & 93 (with a needle) to touch each other. That did the fix and system is back up in good working state. 

    This is really a great fix, I never believed I could implement his fix successfully. Finally achived it without soldering etc.




3 Answers

parveen sharma

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Hi this is parveen

solutiom for d845gvsr not poweringup only led flashing--

short pin 92 and 93 of smsc LPC47M172 with fine tip soldering iron .
pin 92 is nrsmrst signal that is 3.3v at time of working m/b when this signal is low than motherboard not powering up so we short pin 93 that is standby (3.3v) and motherboard powering up again and working properly this problem doesn,t come again in future. this solution is 98% working 2% chances to change the chip.

Posted on Sep 12, 2008



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No power mosfet in vrm section

Posted on Nov 13, 2012



Change your Motherboard. ok

Posted on Aug 11, 2008

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I tried Parveens solution for this problem on 2 absolutely dead D845GVSR mother boards and it fixed the problem for me on both. On mine you had to permanantly short pins 92 & 93 of the LPC47M172 IC near the ddr ram slots.

There must be a reason for why the motherboard went dead in the first place because from the factory, pins 92 & 93 of this IC are not meant to be shorted. Albeit the motherboards work perfectly the shorting of pins on this IC get over the problem but the original fault is still really there but has been bypassed! Still having said that, what a result!

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