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820-2879-b Fanspin and vcore but no boot

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  • 820-2879-b Fanspin and vcore but no boot

    As the title says I get fanspin and it goes fast if i unplug the trackpad or boot in smc bypass but no chime or anything.
    Vcore is at 1.153v, There is a little bit of corrosion arround the lvds connector but only a couple of feedback capacitors

    Green light flashes until i press the power button then it stays steady
    Last edited by PhilipC; 05-22-2017, 02:12 PM.

  • #2
    Resistance to GND on 3V42?

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    • #3
      black on ground is 22.3k
      red on ground is 7.79k

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      • #4
        That is a bit on the low side I'm afraid this is a dead MCP.

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        • #5
          Ow, MCP is part of the processor right?

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          • #6
            Originally posted by PhilipC View Post
            Ow, MCP is part of the processor right?
            Nope, its the other big chip thats not the CPU. Multi Chip Package. Does stuff like usb, graphics, sata etc. Page 2 of schematic.

            Anyway its game over for this board, as you'll not find a new MCP.

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            • #7
              Ow another one for the scrap pile, thanks for the insight

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