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  1. M

    LENOVO YOGA 900-13ISK2 NM-A921 BIOS

    Hi, Regarding your second photo, is that a trick of the light or is there a blow hole on your main board SPI Flash?
  2. M

    LENOVO YOGA 900-13ISK2 NM-A921 BIOS

    Yes, the logo matches that of Alpha & Omega Semiconductor. Thanks, they are all mosfets, in that case they are not relevant to my specific situation. Repair Daemon; when you have the power adapter plugged into the computer, what voltage do you have across the outer pins on JP23 on the main PCB...
  3. M

    LENOVO YOGA 900-13ISK2 NM-A921 BIOS

    This time it took 5 days for the error state to reappear and now it's not reverting back again. The voltage across VCC-GND (pin 8-4) on the Winbond 25Q64FVIQ SPI Flash when the computer is powered on is 3.27V with 2.1mV ripple. It's the same both in the error state and in the functional state...
  4. M

    LENOVO YOGA 900-13ISK2 NM-A921 BIOS

    I have a case that might be related to your problem; same model and same rev systemboard, it intermittently stopped charging. Your battery might have run out. In my case; At first it just quickly blinked off then back on while using the computer with the charger plugged in. Then, longer and...
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