ASUS TP501UA No Display on Battery

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Gecko-EC
    Darryl Ward
    • Sep 2022
    • 22
    • South Africa
    #1

    ASUS TP501UA No Display on Battery

    Hi to all, Hope someone can assist me....Got an ASUS TP501U in from a client. Laptop powers on, but screen will only initialize with the charger connected.
    Battery takes and holds charge just fine. Also USB ports fail after a few minutes of use.
    Latest BIOS loaded. RAM swapped. HDD's removed. Just Mainboard and screen plugged in...
    I am thinking ITE IT8995 chip has failed or needs a reflow...Thoughts?
    Tags: None
    • mcplslg123
      Badcaps Legend
      • Jun 2015
      • 7262
      • india
      #2
      ON battery only,you dont get display on screen.Right? Attach a usb keyboard and see if numlock light glows on toggling numlock key. This'll confirm whether mb is posting in battery or not. Try another screen also.

        Comment

        • Gecko-EC
          Darryl Ward
          • Sep 2022
          • 22
          • South Africa
          #3
          POST if fine on battery. If I plug charger in, screen is perfect. Unplug the charger and I flickers and fades to black. It almost seems as if there is not enough power being provided when on battery. The battery however if in great condition. The reason I am considering the ITE IT8995 is because the USB3/USB-C ports are also affected.
          Last edited by Gecko-EC; 01-11-2024, 02:10 AM.

            Comment

            • mcplslg123
              Badcaps Legend
              • Jun 2015
              • 7262
              • india
              #4
              Search for other threads with flickering screen on asus.Usually its the screen itself in case of asus.You just need to replace a coil marked "100" near backlit controller on the screen itself. Weird but works for many users. Thats why i asked you to try another screen.

                Comment

                Previous template Next

                Related Topics

                Collapse
                • Document Archive
                  ISL88739AHRZ ISL88739 Laptop Battery Charger Datasheet
                  by Document Archive
                  The ISL88739 & ISL88739AHRZ are a highly versatile combo battery charger
                  configurable for operating as either a Hybrid Power Boost (HPB)
                  charger or a Narrow VDC (NVDC) charger, supporting 2-, 3-, or
                  4-cell batteries. Both configurations allow the battery to work with
                  the adapter together to supply the system load when it exceeds
                  the adapter capability, referred to as system Turbo mode. HPB
                  charger configuration reverse-boosts battery energy to the system
                  bus to help the adapter provide the system power in Turbo mode.
                  NVDC charger configuration...
                  11-05-2024, 03:28 PM
                • Document Archive
                  ISL6257HRZ ISL6257HRZ-T Laptop Battery Charger Datasheet
                  by Document Archive
                  ISL6257HRZ ISL6257HRZ-T Laptop Battery Charger Datasheet

                  Highly Integrated Narrow VDC Battery Charger for Notebook Computers

                  The ISL6257HRZ ISL6257HRZ-T is a highly integrated battery charger controller
                  for Li-Ion/Li-Ion polymer batteries. ISL6257 is designed for
                  Narrow VDC applications where the system power source is
                  either the battery pack or the regulated output of the charger.
                  This makes the max voltage to the system equal to the max
                  battery voltage instead of the max adapter voltage. Operating
                  at lower system voltage can improve...
                  11-05-2024, 04:43 PM
                • ktmmotocross
                  asus FX506LI display goes half black when charger is attached and when laptop start or in bios. on battery in windows work ok
                  by ktmmotocross
                  Have this weird problem with asus FX506LI thats display goes half black when charger is attached and from start untill u pout charger in and pull it out. then display like switch to other mode and works ok.
                  I try to shut sown nvidia gpu but it is still the same. there is no bios menu to power down nvidia card. it taped display so i want my options before i pull it out

                  Asus FX506LI-HN227T
                  SN-M4NRCX0S90516C...
                  01-02-2024, 11:23 AM
                • mkdj
                  ASUS X571 no power : battery issue?
                  by mkdj
                  Hello everyone,

                  Mark and model: ASUS X571
                  Symptoms: not turning on. There is only the LED battery indicator working. The owner of the laptop told me this problem arrived one week after having changed the battery. He then managed to power on the laptop only once, and then it never powered on again.

                  Tests already made:
                  - Battery is charging when laptop is plugged in. The LED battery indicator turns white after a couple of hours of charge, indicating that battery is fully charged. However, laptop won't turn on anyway, with or without AC plug.
                  - I have removed...
                  07-14-2025, 09:16 AM
                • flat-earther
                  how to prevent a connected charger from draining battery when not charging?
                  by flat-earther
                  I have an RC radio handset(Taranis QX7) which doesn't have internal battery charger which means I had to remove the battery every time I needed to charge it.
                  So to improve it, I added a 15W USB-C charger board(link) inside and soldered it to the same connector on the PCB where the battery plugs into, great, now I can simply charge it with a USB-C cable.

                  but the problem I found is that after the radio sat for two weeks without being used the 2S 18650 battery that I'm using was at 4.2V!
                  So the battery is backfeeding the charger and being drained.

                  How can I prevent...
                  08-07-2025, 01:04 PM
                • Loading...
                • No more items.
                Working...