Understand super I/O chip numbering

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  • Sryii
    Member
    • May 2014
    • 22
    • USA
    #1

    Understand super I/O chip numbering

    TLDR: which lines on the naming of super Io chips are critical for finding a replacement?

    I have a Lenovo Yoga 2 Pro that isn't turning on. The plug was damaged and it looks like that led to something on the board dying. When plugged in the charging light is solid amber but it will never turn on. After my VERY newbish attempts to user a multimeter I was able to determine that the power was at least starting out the right way and the MOSFETs were working, there was a drop in charge when the power button is pressed on that line and ultimately the super io chip got insanely hot. Looks like it has a scorch mark on it.

    This is a personal laptop and I wanted to take a stab at saving it, but it is hard to find a replacement board that I know will work and isn't a couple hundred bucks. I thought I might try my hands at replacing the chip. Problem is I can't find the exact number written on the chip online so I'm curious if the banking scheme includes a bunch of other identifiers and if just the first line of the name is important.

    The full ITE chip is
    IT8586VG
    1402-FXO
    SCOR3A(not sure about the last number)

    I've seen several online with the first line but not the last two lines. Any insight on this would be much appreciated. Thank you for reading.
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 14002
      • Canada
      #2
      Re: Understand super I/O chip numbering

      Use

      IT8586VG FXO

      1402 = 2014, week #2 (manufacturing date code) so will vary with the chip.

      3rd line is some format that only twins will understand.

      Here is one supplier:

      https://www.ebay.ca/itm/1pcs-LENOVO-...-127632-2357-0

      There are others on AliExpress.

        Comment

        • Sryii
          Member
          • May 2014
          • 22
          • USA
          #3
          Re: Understand super I/O chip numbering

          Thank you @mon2! So helpful! I was curious if that was the case.

            Comment

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