Asus X550LDV only turns On without the CMOS Battery

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • passete
    Living=Sharing
    • Jun 2015
    • 487
    • France

    #1

    Asus X550LDV only turns On without the CMOS Battery

    As the tittle says, this laptop, won't turn ON (When i press the ON switch).
    It charges the battery, and only way to put it working, is by removing the battery and the CMOS battery, like this when i connect the psu, the laptop works Normally.
    Any Tips Guys ?
    Thanks

    PS: i have updated the bios and replaced the Switch On Pcb, No change
    Last edited by passete; 07-17-2017, 01:26 PM.
  • passete
    Living=Sharing
    • Jun 2015
    • 487
    • France

    #2
    Re: Asus X550LDV only turns On without the CMOS Battery

    Found the culprit, replaced the ffc cable between the mobo and the On/Off pcb.
    I've checked before with microscope the actual cable, but no signs of problems ...
    Anyway, we learn everyday

    Comment

    Related Topics

    Collapse

    • Bowline
      Dell E6400 PT434 type Battery Charging Stuck at 1%. Battery Pinouts?
      by Bowline
      My question pertains to understanding the control circuity inside a Dell PT434 type battery used in Dell E6400, E6410 and other Dell notebooks?

      Does anyone have a circuit diagram for the inside of a Dell PT434 battery and/or a description of how the control lines work to control this battery?

      My reason for asking is I have a battery which I cannot get to charge beyond 1% in a Dell E6410 or E6400.
      The LED bar graph charge indicator on the battery shows one LED lighted when the info button is pressed.
      I have tried multiple different Dell power adapters. My Dell...
      06-11-2025, 10:13 AM
    • dhenion
      Asus VivoBook F510UA-AH51 won't run on battery after motherboard replacement
      by dhenion
      I'm working on my sister's laptop: Asus VivoBook F510UA-AH51 - The motherboard died so I replaced it.

      The original board was:
      ASUS X510UNR REV 3.0 A

      The replacement board is:
      ASUS X510UNR REV 3.0 B (identical except B vs A - I couldn't find an A board anywhere. Visually they are identical.)

      It boots right up on the replaced motherboard and everything works fine on the new motherboard - but it won't run off battery. When I disconnect the charger it immediately dies. When I plug it back in and reboot the system - it still shows the battery at...
      01-30-2024, 01:45 PM
    • rob777
      Asus TUF won’t run off battery
      by rob777
      I have an Asus TUF machine that doesn't run off battery. Runs off charger ok, shows orange battery charging light and shows battery is at 96%. Battery voltage is less than 0.5v though. It had a short on the 20v rail from a dead cap. Pic attached. Removed cap and replaced a dc in mosfet. Machine now powers and runs fine.
      I have also replaced all 3 battery mosfets with no change. The 1st battery mosfet has 20v going in. Pic attached.
      Does it sound like a battery ic problem, it has bq2470. Not sure if I should replace that as well at this stage as I'd need to order one.
      Thanks....
      05-27-2025, 07:07 PM
    • Iherduleikgemz
      Asus FX505DY - Battery not charging - BQ24780S
      by Iherduleikgemz
      Hello everyone

      I have been working on this laptop mentioned in the title, it initially had a shorted capacitor. After I replaced it, the thing started working again, but there is still another problem. The laptop was running off a charger, the battery was reporting 96% charge... but when I unplugged the charger, the laptop died. I've measured the battery voltage - 0V. I think it is locked. (Screenshot from batterymon, below).

      I've ordered a new 3rd-party battery, but I think there's something wrong with it too - the laptop boots, but the battery isn't charging. Also,...
      01-13-2025, 03:54 PM
    • cope
      Battery not charging in ASUS G532LWS Motherboard -> BQ24780S
      by cope
      Hi everyone,

      I have been working on a no power issue with my personal ASUS gaming laptop. It went dead a few months ago.

      Some history:

      Since then, I've found a blown mosfet on the GPU line which I replaced. It started up without a battery, then when I added the battery back it wouldn't start up again.

      As a result, there were some blown components around the BQ chip. (The BQ chip itself - BQ24780S, the low side battery mosfet (shorted), and a resistor -> all replaced)

      Now, with a new battery the system will start up and run off...
      05-13-2024, 09:40 AM
    • Loading...
    • No more items.
    Working...