2018 Macbook Pro A1990 2Tb, SSD1 dead

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  • mattknudstrup@gmail.com
    New Member
    • Aug 2023
    • 3
    • USA
    #1

    2018 Macbook Pro A1990 2Tb, SSD1 dead

    Hello All,

    My 2018 Macbook Pro (2TB) crapped out recently, won't turn on. Diagnosed so far as shorted second terabyte SSD1. Question for the forum. I'm thinking about removing or disabling SSD1 and just using SSD0 which will still give me 1Tb usable. I'm assuming all the boot up stuff is all in SSD0. Am I correct about this? If so is there a way to disable SSD1 without removing all the associated components? Will just powering it down do the trick?

    I currently have U9580 (TPS62180) removed as it was fried but that is as far as I have gone with it. In other words I haven't identified the short yet so I suppose it could still be a capacitor but guessing I won't get that lucky.

    Any info or advice on how I should proceed is appreciated. I do have schematics and board file, and I am a computer engineer so can understand the circuits. I just don't have much experience with this system.
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 13834
      • Canada
      #2
      Re: 2018 Macbook Pro A1990 2Tb, SSD1 dead

      Check the resistance to ground of each inductor. Each inductor is linked to a local switching buck regulator.

      If the resistance is too low, the shorted cap may be on that power rail.

      Remove all power during the resistance checking.

        Comment

        • reformatt
          Badcaps Legend
          • Feb 2020
          • 1398
          • Australia
          #3
          Re: 2018 Macbook Pro A1990 2Tb, SSD1 dead

          I don't believe it is possible to do that, as they are all striped with firmware as a set of 8 by Apple. Not to mention Apple has these all underfilled making a simple process a PITA.

          Watch this video on how hard Apple has made what is a simple replacement in a PC to a nightmare on a MAC. Built in obsolescence as the SSD will ultimately wear out and die, and the whole machine is thus useless.

          https://www.youtube.com/watch?v=yR7m...annel=iBoffRCC

            Comment

            • mattknudstrup@gmail.com
              New Member
              • Aug 2023
              • 3
              • USA
              #4
              Re: 2018 Macbook Pro A1990 2Tb, SSD1 dead

              Thanks for the replies guys. reformatt, I had watched that video and to me it looks like the two SSD's are striped separately with the nands labeled 0-3 on each one. Not a fan at all of Apple design techniques. I won't be buying another one. But I may test the theory that it's possible that the two SSD's are striped separately and will report back.

                Comment

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