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Lenovo 530 Vcore : what is the maximum ripple?

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    Lenovo 530 Vcore : what is the maximum ripple?

    Hi

    I have a Lenovo 530 14ikb i5 8th gen motherboard and it fails to start Windows: it normally dies after I try to load Windows. Getting into bios screen works fine.

    Made some measurements and I suspect that there is to much ripple on the 2 Vcore coils.

    What is normally the maximum ripple allowed on say any of the power supplies? A few %??

    The ripple is on both Vcore as outlined in red in attached photos.

    Could be a bad driver?

    Cheers
    Attached Files

    #2
    Re: Lenovo 530 Vcore : what is the maximum ripple?

    Ps i am using a 1:10 probe so ripple is about 150mV on a 0.75 or so DC voltage

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