Lenovo E14 not working on charger works on battery

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • koby058
    Badcaps Veteran
    • Jan 2017
    • 382
    • israel

    #1

    Lenovo E14 not working on charger works on battery

    Hello.

    I have this laptop Lenovo E14 AMD

    when connecting type c power, the amp meter shows 20v, for a second it goes up to 0.5 amp and then back to 0.27amp

    the laptop works on battery.

    pushing 12v on PL3 make PU6 get hot, when removed PU6 and pushing 12v no power is pulled by MOBO

    Resistance on PU6 pin 2 is 4ohm

    Any advise how to continue ? do you think replacing pu6 will make it work?

    attached schematic

    Attached Files
  • Mugi
    New Member
    • Feb 2022
    • 9
    • uk

    #2
    Hello KOby058.

    How did you fix the above issue ?

    Comment

    • Mugi
      New Member
      • Feb 2022
      • 9
      • uk

      #3
      The charger is fine and the charger port also is fine. The USB amp meter it showing 19v with 02A. the laptop works with battery power but not main charger .
      Same problem us koby058

      Comment

      • REpairAT
        Senior Member
        • Nov 2020
        • 142
        • Austria

        #4
        Just fixed exactly this fault. Replace UT5, NX20P5090UK
        ​Let me know if it worked.

        Comment

        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
        • ferah831208
          Strange battery present behaviour in Lenovo Legion 5-15ARH05 mb model nm-d041
          by ferah831208
          Hello guys, i need help with this problem, I have a NM-D041 mobo, it came with low impedance in 3v linear regulator rail, the cause was a damaged EC controller ITE8227e-192. I ordered a new one and replaced it. This laptop have a different chip for keyboard management and it8227e pins for programming ITE chips are not accesible through keyboard interface, I flashed it using i2c interface pins with vertyanov programmer because laptop was dead and SPI flash didn't have power (only 3v EC) so it couldn't access firmware stored in SPI memory. I read SPI and extracted it8227 firmware from original BIOS...
          03-18-2025, 01:18 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...
          Yesterday, 01:04 PM
        • 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
        • Loading...
        • No more items.
        Working...