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

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  • ktmmotocross
    Boardkiller
    • Feb 2014
    • 3608
    • slovakia
    #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?
    Tags: None
    • mcplslg123
      Badcaps Legend
      • Jun 2015
      • 7262
      • india
      #2
      No,all mb dont work with 1 phase cut off.Its true some mb works with 1 phase cut off.

        Comment

        • ktmmotocross
          Boardkiller
          • Feb 2014
          • 3608
          • slovakia
          #3
          Originally posted by mcplslg123
          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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