acer aspire one no power problem

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  • ry x hunter
    Senior Member
    • Jun 2013
    • 184
    • philippines

    #1

    acer aspire one no power problem

    helloo guys.. i need help for my acer notebook d257 model.. It wont turn power on.. I receive it yesterday.. i found burn resistor PR165 located along 3.3volt and 5 volts regulator IC VIn..i try to replace but the resistor is burn again.. this Resistor supply Vin of thhis regulator ic.. i need help to the expert..

    board id is ze6
    Attached Files
  • fddizon
    Badcaps Veteran
    • Sep 2011
    • 555
    • Philippines

    #2
    Re: acer aspire one no power problem

    check pc122 if shorted.
    if not, check pin16 of pu3 if shorted to ground

    check upper FETs also
    Last edited by fddizon; 10-19-2014, 11:28 AM.

    Comment

    • pcnetch
      Senior Member
      • Aug 2013
      • 125
      • Sri Lanka

      #3
      Re: acer aspire one no power problem

      Originally posted by ry x hunter
      helloo guys.. i need help for my acer notebook d257 model.. It wont turn power on.. I receive it yesterday.. i found burn resistor PR165 located along 3.3volt and 5 volts regulator IC VIn..i try to replace but the resistor is burn again.. this Resistor supply Vin of thhis regulator ic.. i need help to the expert..

      board id is ze6
      check pin 16 (vin) is short with ground or not. If it is short, Try replace PU3

      Comment

      • ry x hunter
        Senior Member
        • Jun 2013
        • 184
        • philippines

        #4
        Re: acer aspire one no power problem

        Originally posted by fddizon
        check pc122 if shorted.
        if not, check pin16 of pu3 if shorted to ground

        check upper FETs also
        pc 122 sir is ok

        Comment

        • ry x hunter
          Senior Member
          • Jun 2013
          • 184
          • philippines

          #5
          Re: acer aspire one no power problem

          i replace pu3 and vin become ok.. 3.3 volts and 5 volts become ok but still no power

          Comment

          • ry x hunter
            Senior Member
            • Jun 2013
            • 184
            • philippines

            #6
            Re: acer aspire one no power problem

            i notice the positive and negative pin of battery port was slightly shorted.. i put test probe on both side and i got resistance on both side..

            Comment

            • ry x hunter
              Senior Member
              • Jun 2013
              • 184
              • philippines

              #7
              Re: acer aspire one no power problem

              i try to to replace pu7 and resistance on battery pin on positive and negative back to normal.. but when i try to power, you need to press it repeatedly to power up.. and i notice that when i press the power button the power us flactuating

              Comment

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