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    #1

    asus g750 dead cpu?

    I have asus g750jw, the laptop was shorting the charger (attached boardview)...i removed everything from motherboard and start looking using multimeter. I found short to ground almost on every part of the board finally i found that the problem was in 19 net, the capacitor pce6000-poscap 15UF/25V was dead, shorting the motherboard... I removed it...
    Later i checked and most of the board was ok but some parts still short to ground...so i isolated the problem and found it in +vcore net.
    I removed every capacitor and resistor that connects +vcore net to other nets and now i have only short to ground from +vcore and pvcore_csref_10 net.

    In pitctures:

    1. Desoldered from bottom of the board, all +vcore:


    2. Desoldered from other side of the board, all +vcore except CPU.


    3. Again picture from bottom and up but now of net pvcore_csref_10, the net that is also shorting to the ground. And i couldnt find any other net that is shorting to ground.







    And finally while measuring continuity between gnd and+vcore i have long beep. And when measuring resistence between +vcore and gnd i get reading 16.5 ohms . So can i safely assume that CPU is dead or? PLease help me, i am new in all this...

    Thank you!
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    #2
    Re: asus g750 dead cpu?

    No, 16.5 ohms of resistance between VCore and ground is perfectly fine. Solder everything back (try not to heat the CPU) and measure again. If it still doesn't work, your problem is most likely elsewhere.
    OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

    Comment

      #3
      Re: asus g750 dead cpu?

      Yes, i can confirm that, it is not a short at the voltages the CPU runs at. With GPUs, some big ones read as low as 1.5-2 ohm. Most will be in the 4-20 ohm range. Your CPU is perfectly fine.

      Put all other parts back on and see if it runs.
      Originally posted by PeteS in CA
      Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
      A working TV? How boring!

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        #4
        Re: asus g750 dead cpu?

        ok, thank you, i will try...but one question, why do i hear long beep? on continuity test with multimeter? is it because low resistence or?
        Thank you!

        Comment

          #5
          Re: asus g750 dead cpu?

          Yes, in this mode your multimeter will beep when it measures a resistance under a certain threshold (depends on the multimeter, might be around 50 ohms).
          In most cases this indicates a short, except when measuring high power/low voltage lines as it is the case on CPU VCore, GPU VCore, and NB or PCH core voltage. Those are often lower than 50 ohms.
          OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

          Comment

            #6
            Re: asus g750 dead cpu?

            Just to let you know and to close this topic, it took me a while to solder everything back and finally after that i replaced that capacitor on 19v net and now the laptop is working excellent thank you all for your time and help.

            Comment

              #7
              Re: asus g750 dead cpu?

              https://www.badcaps.net/forum/attach...4&d=1490724517

              Comment

                #8
                Re: asus g750 dead cpu?

                Hi, what capacitor you change??? can you put a picture, i have a the same laptop with the same problem. please help me

                Comment

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