lenovo yoga 500 not charging

Discussion in 'Computer Hardware Repair' started by hgzy ahmd, May 14, 2018.

lenovo yoga 500 not charging 5 5 2votes
5/5, 2 votes

  1. hgzy ahmd

    hgzy ahmd Well-Known Member

    Joined:
    Nov 21, 2015
    Messages:
    53
    Likes Received:
    11
    this problem repeated in this model
    I replace battery but not fix the problem
    replace charging ic bq24780 but not fix it
    I flashed main bios not fix it
    software like the Power Management not fix it
    all measurable components are good ( mosfets - resistors - ... )
    I have two notebooks with the same issue

    please what's yours suggestions?
     

    Attached Files:

  2. Loading...

    Similar Threads - lenovo yoga charging Forum Date
    BIOS PC lenovo yoga 310s-11iap BIOS/UEFI Mar 5, 2020
    Lenovo Yoga C930-13IKB EYG70 NM-B741 ARIEL-SOVP REV: 1.1 LENOVO Jul 27, 2019
    Lenovo Yoga 920 LCFC NM-B291 ( DYG60 ) Computer Hardware Repair Jun 17, 2019
    Yoga S730-13IWL Laptop (Lenovo) BIOS BIOS/UEFI May 28, 2019
    Lenovo ThinkPad Yoga 370 - Type 20JH MB CIZS3 LA-E292P BIOS/UEFI Apr 7, 2019

  3. 01ifix

    01ifix Well-Known Member

    Joined:
    Jun 10, 2015
    Messages:
    1,377
    Likes Received:
    103
    nuvoton have 3.3v ?
     
  4. hgzy ahmd

    hgzy ahmd Well-Known Member

    Joined:
    Nov 21, 2015
    Messages:
    53
    Likes Received:
    11
    yes dear there is 3.3 charging id on RN2403
     

    Attached Files:

  5. hgzy ahmd

    hgzy ahmd Well-Known Member

    Joined:
    Nov 21, 2015
    Messages:
    53
    Likes Received:
    11
    NOTE:
    notebook is working will , and working on charged battery ,

    I replace io and fleshed bios over windows but the same ,not charging :(
     

    Attached Files:

  6. 01ifix

    01ifix Well-Known Member

    Joined:
    Jun 10, 2015
    Messages:
    1,377
    Likes Received:
    103
    with schematic can check all signals and maybe can fix it
     
  7. hgzy ahmd

    hgzy ahmd Well-Known Member

    Joined:
    Nov 21, 2015
    Messages:
    53
    Likes Received:
    11
    here is schematic for bq24780

    http://www.ti.com/lit/pdf/tidrh84

    but i dont found schematic for this model
     

    Attached Files:

  8. zmogienas

    zmogienas Well-Known Member

    Joined:
    Dec 3, 2015
    Messages:
    77
    Likes Received:
    6
    Hello! Found the solution? :)
     
  9. soupapowa

    soupapowa New Member

    Joined:
    Jun 1, 2016
    Messages:
    6
    Likes Received:
    0
    Hello,
    Your problem is complicated...
    I think you have to find components (MOSFET, Capacitor) nearly the battery.
    And try to check that, maybe one component is broken.
     
  10. MOBOKAP

    MOBOKAP Well-Known Member

    Joined:
    Oct 17, 2015
    Messages:
    20
    Likes Received:
    6
    I have found the solution . After PD4403 have an resistor 10 ohm . my resistor was 560 OHM. and BQ 24780 dont have 20V VCC in pin 28 .
     

    Attached Files:

    • Like Like x 4
  11. 01ifix

    01ifix Well-Known Member

    Joined:
    Jun 10, 2015
    Messages:
    1,377
    Likes Received:
    103
    thanks for share knowledge
     
  12. gligurski

    gligurski New Member

    Joined:
    Jan 29, 2017
    Messages:
    1
    Likes Received:
    0
    Beautiful and elegant solution. Thank You very much. Worked like a charm straight away. Found the resistor, mine was around 460 Ohm, replaced it with 10 Ohm, charging started immediately. Thank You again.
     
  13. Deppe92

    Deppe92 Well-Known Member

    Joined:
    Nov 5, 2015
    Messages:
    25
    Likes Received:
    2
    You Sir, won the Internet! Keep up the good work!

    Mine had 7k Ohm
     
  14. xiaocao1021

    xiaocao1021 New Member

    Joined:
    May 15, 2019
    Messages:
    1
    Likes Received:
    0
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice