Lenovo X1 7th Gen Carbon removing WSON Bios

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  • davem12
    Member
    • May 2019
    • 11
    • USA
    #1

    Lenovo X1 7th Gen Carbon removing WSON Bios

    Hello,

    I am trying to read the Bios on a Lenovo X1 Carbon 7th gen. It has a Winbond W25Q256JVEIQ chip in a WSON configuration. I have not come across this type of chip in the past and there is two very small resistors next pins 1 and 3. I don't want to blow them off when using hot air. Would it be possible to read on-board or does it need to be removed to read correctly?

    Any tips would be very helpful.

    Thank You
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    • ktmmotocross
      Boardkiller
      • Feb 2014
      • 3578
      • slovakia
      #2
      Re: Lenovo X1 7th Gen Carbon removing WSON Bios

      did u know what is surface tension?

        Comment

        • davem12
          Member
          • May 2019
          • 11
          • USA
          #3
          Re: Lenovo X1 7th Gen Carbon removing WSON Bios

          I believe the surface tension with solder is it will hold it in place and the chips will align to the solder pads.

          I think one of my issues is I don't have a pre-heater for board rework and I need to apply a lot of hot air to get the solder to melt.

          Thank You

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