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    T431s and IPS screen AU OPTRONICS B140HAN01.3... flickering

    Discussion in 'Lenovo' started by Peppino, Sep 18, 2017.

  1. Peppino

    Peppino Newbie

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    I did this replacement after reading many comments, even on this forum, and I am still amazed of the picture quality difference, the IPS panel is so much nicer.
    But I am not completely satisfied, as apparently I will not be able to use the display, as it starts to flicker immediately after the power cord gets pulled out.
    So if it runs from power, everything is fine, but as long as I want to use it as a portable laptop, it becomes unusably annoying.

    I suspect this might be related to power issues, as the new display would draw a higher current, but I cannot confirm this. On the other hand it seems to be related to the driver, as if the official driver is not installed, the flickering is not present.
    Can anyone let me know if there is a solution for this problem?
     
    Peppino, Sep 18, 2017
    #1
  2. SJLPHI

    SJLPHI Notebook Evangelist

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    are you using 9 cell battery or the 6 cell? On my T430 with quad core, 1600x900 dedicated graphics and intel 6300 wifi card, on 6 cells. I get power issues. 9 Cell battery gets rid of many of my issues
     
    SJLPHI, Sep 19, 2017
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  3. SJLPHI

    SJLPHI Notebook Evangelist

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    Please scratch what I said, I obviously misread
     
    SJLPHI, Sep 19, 2017
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  4. Peppino

    Peppino Newbie

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    No problem. I don't think it is battery related, however it could be anything. I'd rather blame the driver.
     
    Peppino, Sep 19, 2017
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  5. Vvojciech

    Vvojciech Newbie

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    i have exactly same problem. same laptop and screen. lg fhd ips was not best quality but has no flickering problem. i hope someone help
     
    Vvojciech, Oct 14, 2017
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  6. Peppino

    Peppino Newbie

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    You mean, LGs IPS panel works for you?
     
    Peppino, Oct 14, 2017
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  7. Vvojciech

    Vvojciech Newbie

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    Yes. i already have Lg ips( standard hd screen was replaced by other owner of t431s). it has dead pixel and quality is not best but works without flickering.
     
    Vvojciech, Oct 14, 2017
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  8. Peppino

    Peppino Newbie

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    can you share the part number, please?
     
    Peppino, Oct 14, 2017
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  9. Vvojciech

    Vvojciech Newbie

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    LP140WF6 (SP) (B3)
     
    Vvojciech, Oct 14, 2017
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  10. Vvojciech

    Vvojciech Newbie

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    Also i found some post about video refresh rate. ot might work for us.
    will try when i will come back to home:

    video "refresh rate" is switching between 60hz ( on AC power ) and 50Hz on battery. under Monitor settings, set the screen refresh rate to 50hz. after applying these settings blinking problem gets fixed
     
    Vvojciech, Oct 14, 2017
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  11. Vvojciech

    Vvojciech Newbie

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    any news ? my auo stopped flickering and works perfect. in my case max brightness on battery was locked to 80% ( 100% when AC connected) . now both are 100%.
     
    Vvojciech, Oct 17, 2017
    #11