acer nitro 5 515-51 no power

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  • tikanot
    Senior Member
    • Mar 2020
    • 67
    • france

    #1

    acer nitro 5 515-51 no power

    hello i have an acer nitro 5 515-51 no power, i have find a short in pq303 and pq304 , i have put 19V in pr304 and i don't find any cc but no power too. before chance pq303 and pq304 i need to know if other part is dead
  • mon2
    Badcaps Legend
    • Dec 2019
    • 14062
    • Canada

    #2
    Re: acer nitro 5 515-51 no power

    Can you post the schematic for this logic board ? I did find 515-52 schematic in my sub but the part references are not the same.

    If the above are the first 2 mosfets that mate with the DCIN then remove all power. meter in resistance mode.

    Using this resistance mode, check if the mosfets are defective or not.

    Measure the resistance between:

    source (1-2-3) & drain (5-6-7-8)
    source (1-2-3) & gate (4)
    gate (4) & drain (5-6-7-8)

    If you see 'OL' = over limit - then increase the resistance scale to the next higher setting on your meter and measure again.

    If you see a low resistance reading, the mosfet is defective and needs to be replaced.

    Repeat the test with the next mosfet.

    Post the readings.

    Comment

    • JaroTech
      Badcaps Veteran
      • Mar 2015
      • 351
      • Canada

      #3
      Re: acer nitro 5 515-51 no power

      It's the same schematic as the Acer Aspire A715-71.

      Comment

      • mon2
        Badcaps Legend
        • Dec 2019
        • 14062
        • Canada

        #4
        Re: acer nitro 5 515-51 no power

        Well noted. Now see the same mosfet references.

        Post the resistance values of the first 2 mosfets.

        Comment

        • tikanot
          Senior Member
          • Mar 2020
          • 67
          • france

          #5
          Re: acer nitro 5 515-51 no power

          i have test it and i have find the two mosfet is dead

          Comment

          • tikanot
            Senior Member
            • Mar 2020
            • 67
            • france

            #6
            Re: acer nitro 5 515-51 no power

            shortage is remove but no power.

            Comment

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