Sony MBX 270 Battery Not Detected

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  • AmangGayam
    Member
    • Jul 2014
    • 10
    • Indonesia
    #1

    Sony MBX 270 Battery Not Detected

    Hi guys

    I have a problem with sony mbx 270, where the battery is not detected, i have replace the battery with new one, replace the charging ic BQ25A, flash bios, replace charging mosfet 4468, still no luck

    Laptop just work fine with AC adapter,
    and voltage on battery pin when battery plugged with ac adapter
    1. 2.9v
    2. 3.4v
    3. 3.2v
    4. 3.2v
    5. 3.2v
    6. 0v
    7. 0v

    Battery only
    1. 0v
    2. 2.6v
    3. 0v
    4. 0v
    5. 0v
    6. 2.6v
    7. 0

    and no schematic for this board
    Attached Files
    Last edited by AmangGayam; 06-28-2017, 03:48 AM.
    Tags: None
    • mcplslg123
      Badcaps Legend
      • Jun 2015
      • 7262
      • india
      #2
      Re: Sony MBX 270 Battery Not Detected

      battery not detecting probably coz its deeply discharged. I got a case yesterday where sony hk5 mb refuses to detect battery. I simply connected the battery on a sony HK1 mb for some time(charging light wont glow) and then re-connected the battery on hk5 mb and it started charging.

      I'm not saying that its your case but think aboutit as i wasted 2 hours to solve this and ultimately this wierd trick did the job.

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