BAD Laptop Ac power adapter - Asus sadp-65kb b

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  • kleung
    Senior Member
    • Jun 2012
    • 72
    • Canada

    #1

    BAD Laptop Ac power adapter - Asus sadp-65kb b

    Adding to the knowledge base.

    Had an asus laptop that would power on for a second (flicker) and then shut down. Thought it was the motherboard since I had dropped the laptop and ended up discarding it.

    Instead, have now trouble-shot it to the AC power adapter.

    It is a Delta electronics manufactured unit for an ASUS laptop (a3v laptop I bleieve)

    Outputi s 19V - 3.42 amps.

    model number is sadp-65kb b


    Anyways, the ac adapter emits a quiet squeel when plugged in with a green LED. Laptop would indicate standby power/recognize the adapter.

    However, under load, it would fail within the first second, failing to even BIOS/POST the laptop.

    I cracked open the ac adapter and found 2 bad capacitors

    25V-680uF were bulging/leaking.

    Don't know if this is a known issue with these adapters, but hopefully this knowledge may help someone.

    Did not replace/repair the adapters as i had taken a hammer to the seams to break it open. Didn't want to repair it in case I damaged/shorted something out with the hammer.
  • ben7
    Capaholic
    • Jan 2011
    • 4059
    • USA

    #2
    Re: BAD Laptop Ac power adapter - Asus sadp-65kb b

    Pictures? Never heard of caps failing in a delta laptop PSU. I am sure though it does happen. What brand(s) were the capacitors?
    Muh-soggy-knee

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    • kleung
      Senior Member
      • Jun 2012
      • 72
      • Canada

      #3
      Re: BAD Laptop Ac power adapter - Asus sadp-65kb b

      Sorry for the delay,

      I have posted pics.

      I threw away the broken adapter. it was for an old Pentium 4/Pentium M class laptop so may have been affected by the counterfeit capacitors??? of the era.

      you can't see the manufacturer/rating from that angle; I did record the rating before throwing it away.

      25V-680uF
      Attached Files
      Last edited by kleung; 01-31-2013, 01:40 AM.

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