Ideapad Yoga 3 14" - help with repair.

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  • petr.hlavacu
    Member
    • Nov 2020
    • 11
    • CZ
    #1

    Ideapad Yoga 3 14" - help with repair.

    Hi, i have a Lenovo Ideapad Yoga 3 (14", i5-5500U, board NM-A381). It only light up power led (no screen, fan spin, nothing). I found shorted mosfet on vcore rail. After replaced the mosfet its turning on. Fans spins up and down according to temps but still no screen. I found the coil next to replaced mosfet warm up, then getting hot. I measured the coil and it seems fine.
    Can anyone advise where to continue to look for a fault?

    PS: Sorry for my bad english.

    EDIT: Vcore voltage seems fine.
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