The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    Solution to Aspire 5738/7736 No-Power

    Discussion in 'Acer' started by WindDrake, Sep 1, 2011.

  1. WindDrake

    WindDrake Notebook Enthusiast

    Reputations:
    31
    Messages:
    44
    Likes Received:
    1
    Trophy Points:
    15
    Hey folks.

    Just as a preamble to these findings: YMMV. I'm a professional SMT Repair Tech and the head of engineering for a large repair company. This is just my findings, and may/may not solve your problems.

    Not a lot of text to input, just follow the images.

    The scope image will just help you figure out if your regulator has barfed, but is still running. This happens a lot with the 5738. You'll have 5v, but no 3.3v, and the gate line of the 5v High-Side Transistor will look like that. Yuck.

    The boards are both from the same reference design, so notes for one are applicable to the other.
     

    Attached Files:

    WindDrake, Sep 1, 2011
    #1
    Timborixos likes this.
  2. eizo

    eizo Newbie

    Reputations:
    0
    Messages:
    1
    Likes Received:
    0
    Trophy Points:
    5
    i just replace the 5v fet u58 and my laptop is back to life! thank you!
     
    eizo, Aug 14, 2012
    #2
  3. nickeftekhari

    nickeftekhari Newbie

    Reputations:
    0
    Messages:
    1
    Likes Received:
    0
    Trophy Points:
    5
    Thank you
    It helped me alot
     
    nickeftekhari, Oct 27, 2012
    #3
  4. yayluu

    yayluu Newbie

    Reputations:
    0
    Messages:
    1
    Likes Received:
    0
    Trophy Points:
    5
    Hello.
    I've got a 5738g.
    when i plug the ac adapter the charger light blinkes orange.
    i pushed the touchpad on/off light on.
    i pushed the eco button light on.
    but when i push the power button nothing happens.
    is that the mosfet problem or something else?
    i can't find that mosfet (fds8884) around my country. if u say yes that is mosfet problem i will really work hard to find it.
    please help me...
     
    yayluu, Jan 20, 2013
    #4
  5. djamelgsm

    djamelgsm Newbie

    Reputations:
    0
    Messages:
    1
    Likes Received:
    0
    Trophy Points:
    5
    big thanks

    Nice Job
     
    djamelgsm, Sep 15, 2013
    #5