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Did all laptop works when they lost one of power phases for cpu?

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    #1

    Did all laptop works when they lost one of power phases for cpu?

    Hello.
    Have this acer nitro that have short on 1of4 for powerstage for cpu. i remove shorted drmos and power for cpu and laptop start but have no video or BL on lcd. all voltages are now ok. as i see there is some amateur injection marks so i think someone toasted cpu with highvoltage.

    quistion is - should all/most of laptop works in basic when lost one of power phases for cpu/gpu ? i know that many does, but did all?
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    #2
    No,all mb dont work with 1 phase cut off.Its true some mb works with 1 phase cut off.

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      #3
      Originally posted by mcplslg123 View Post
      No,all mb dont work with 1 phase cut off.Its true some mb works with 1 phase cut off.
      i have met only laptop that works without one phase. so it is best to replace shorted power stage even when rail have good voltage? u mean that PGOOD signal from controller must not be released?

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