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lenovo w540 mec1633 lkm-1 ws mb 12291

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  1. NBS-Elextrixman

    W540 - black screen and turning on for a moment

    I welcome all good people in this forum :) I have a problem with repairing Lenovo motherboards. W540 LKM-1 WS MB 12291 I have 4 pieces of W540 motherboard - they all have the same symptom. - motherboard is switched on for a moment but the screen is black. - if the battery is inserted, the...
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