Asus GL502VT - video bios chip voltage?

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  • Shotgun25
    Senior Member
    • Feb 2014
    • 90
    • UK
    #1

    Asus GL502VT - video bios chip voltage?

    Hi all,

    Please could someone advise me on the following attachment?

    The chip is labelled as a Winbond 25X40CLNIG (suspected datasheet attached).

    1. I am wondering if this chip should have 4.2v on pins 7 and 8 and 0v on all other pins during normal operation? Those readings are not the 3v I expect. Also I thought pin 1 should have power to it when it is operational.

    2. If this is not normal, what should I be expecting on each pin? I see that the datasheet says 4.6v is the absolute maximum voltage rating.

    I am trying to investigate an issue with a NVidia GTX 970m graphics chip in the laptop due to it freezing and locking up when the graphics card is engaged.
    I suspect this chip to be a video BIOS chip and want to establish it's normal voltage reading to see if it is part of the problem.

    Regards,

    MATT
    Attached Files
    Tags: None
    • caspian
      Badcaps Legend
      • Oct 2015
      • 1589
      • Laptop
      #2
      Re: Asus GL502VT - video bios chip voltage?

      are all voltage rails correct on the mainboard? what problem does this mainboard have?
      the voltages you measured on that the video BIOS chip are not normal at all, but the video BIOS chip is one of the last components you can suspect.
      Last edited by caspian; 04-27-2018, 02:12 PM.

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