Lenovo Flex 5 self power on no post

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • koby058
    Badcaps Veteran
    • Jan 2017
    • 373
    • israel
    #1

    Lenovo Flex 5 self power on no post

    Hi Everyone,

    Lenovo Flex 5-14IIL05 Laptop (ideapad) - Type 81X1​

    Laptop powers on however blinking power light and caps lock and esc key lit.

    I have tried a clean bios and also replace the bios chip and got same results.

    When connecting to power supply it pulles nearly 1 amp steady, fan is spinning cpu getting worm no post

    Any advise ?

    Tags: None
    • reformatt
      Badcaps Legend
      • Feb 2020
      • 1400
      • Australia
      #2
      If there is no apparent corrosion or damage to the board, and your Vcore voltages are correct, I usually find this is bad CPU contact due to broken balls etc. I see this a lot on the flimsy lappies which allow the board to flex when you open the lid etc.

      To confirm, try applying pressure to the CPU in different spots with the heatsink off while monitoring current when its beginning to boot. If you see variations up and down, rather than a static figure, then the board is probably booting (use a Chipmunk USB tester or similar is helpful to see if the port is being probed from a booted system). If you need to reball, I'm told the black glue that Lenovo uses makes these chips almost impossible to get off without destroying pads etc.
      Last edited by reformatt; 09-12-2024, 12:25 AM.

        Comment

        • koby058
          Badcaps Veteran
          • Jan 2017
          • 373
          • israel
          #3
          Originally posted by reformatt
          If there is no apparent corrosion or damage to the board, and your Vcore voltages are correct, I usually find this is bad CPU contact due to broken balls etc. I see this a lot on the flimsy lappies which allow the board to flex when you open the lid etc.

          To confirm, try applying pressure to the CPU in different spots with the heatsink off while monitoring current when its beginning to boot. If you see variations up and down, rather than a static figure, then the board is probably booting (use a Chipmunk USB tester or similar is helpful to see if the port is being probed from a booted system). If you need to reball, I'm told the black glue that Lenovo uses makes these chips almost impossible to get off without destroying pads etc.
          Thanks for your answer
          Will a re flaw work ?

            Comment

            • reformatt
              Badcaps Legend
              • Feb 2020
              • 1400
              • Australia
              #4
              Not sure if it has that black glue on the edges. I've never personally tried to remove it, but others say it's awful.

                Comment

                Previous template Next

                Related Topics

                Collapse
                • Tynan Dill
                  Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?
                  by Tynan Dill
                  I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.

                  Upon bringing it home and plugging it up, it showed a standby light.

                  I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.

                  The screen seems to blackout and stay black, but with a flashlight I can see the display.

                  With my Playstation 4 connected via HDMI, and running a game I can hear sound.

                  Assuming...
                  ORIGINAL POWER SUPPLY BOARD
                  7 Photos
                  11-22-2024, 01:46 PM
                • claws77
                  lenovo flex 5 14itl05 power sequence issue
                  by claws77
                  hi guys, my motherboard will not start no matter what
                  when connected to ac power, the battery does get charge, led indicator glows red when discharged and turns white as it is fully charged.
                  but rest nothing happens no sign of life.

                  this laptop has one preexisting usbc power issue - so i use DCIN jack for charging my laptop.
                  with this issue my laptop was unable to power ON only sometimes i just had to wait some time.
                  but now nothing happens no matter how much i wait/ charge/ press and hold power button.

                  i have no knowledge of motherboards ....
                  10-20-2024, 02:48 PM
                • PantherDave
                  Microsoft Surface Pro (5th gen) model 1796 - no power
                  by PantherDave
                  Hi all!

                  I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅

                  I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
                  https://www.badcaps.net/forum/troubl...-hardware-devi...
                  05-29-2024, 02:01 PM
                • GLISIT
                  Asus Probook P5440UF-XB74 power issue
                  by GLISIT
                  Hi all,

                  TL;DR - this laptop is driving me nuts with the oddball power-related behaviors. Appreciate any insight you can provide!


                  I'm experiencing a power issue on an Asus Probook P5440UF-XB74. Although I've worked with electronics and computers for decades, this is my first attempt at getting into motherboard-level component troubleshooting. Any help the community can provide is greatly appreciated!

                  A few weeks ago I was using the laptop (on battery power) for a Zoom meeting. The battery was running very low (long meeting) but I wasn't worried about...
                  01-16-2025, 02:29 PM
                • survivalbloke
                  Lenovo Flex 5 14ITL05 - will only sleep if commanded to through start menu>power icon
                  by survivalbloke
                  This laptop refuses to sleep unless specifically commanded to sleep through Windows. If I close the lid, the screen does go dark just before the lid is closed, so it appears the hall sensor works. However, it will sit there, drawing 1.xx amps until the battery dies. If I command it to sleep, it drops down to normal sleeping current. If I have it sleeping with lid closed and I disconnect the power adapter, it will wake from sleep, even with the lid closed. I have updated the firmware, but still the fault persists. I've also verified power settings in Windows that the device is to sleep when the...
                  03-20-2025, 02:29 PM
                • Loading...
                • No more items.
                Working...