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Apple APPLE K91F K91X FLYING_DUTCHMAN 051-8620 820-2915 Macbook Pro A1286

Discussion in 'Schematic Laptop' started by ThienBui, Jul 6, 2014.

Apple APPLE K91F K91X FLYING_DUTCHMAN 051-8620 820-2915 Macbook Pro A1286 4.3 5 3votes
4.3/5, 3 votes

  1. ThienBui

    ThienBui CEO Staff Member

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    How? i no Understand
     
  2. Luís Amaral

    Luís Amaral VIP PRO

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    well he simple asked , if the page he showed about people converting maxcbook unit from ATI OR NVIDIA TO INTEL only was indeed a real job or just something fake !!its just a matter of reading calmely and you will unsderstand
     
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  3. tonhyto29

    tonhyto29 New Member

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    Do you have Clear Me bios???
     
  4. ThienBui

    ThienBui CEO Staff Member

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    yes, buy one VIP and get support
    Account Upgrades
     
  5. Ebarduil

    Ebarduil VIP PRO

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  6. chipmunk

    chipmunk VIP PRO

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    Tiresias (the GPUkiller)

    The Tiresias is a small board that can be soldered onto the motherboard of the MacBook Pro 15-inch or 17-inch 2011 (Early or Late) models.

    These are all the models that have the 820-2914-A, 820-2914-B, 820-2915-A or 820-2915-B motherboard.

    The 820-2914 and 820-2915 board has two GPUs. The internal (Intel) GPU that is part of the PCH, and an external (discrete) AMD GPU. It is the external GPU that fails in 'a small percentage of MacBook Pro systems' (Apple-speak for: 'very many'). The Tiresias writes the 'gpu-power-prefs' nvram-variable to the ROM so that the Mac does not use the (dead) external (discrete) AMD GPU anymore. If the user clears the NVRAM (PRAM) there is no problem as the Tiresias will write the record again, and the Mac will work again.

    This makes this the ideal solution to bring a 820-2914 or 820-2915 with dead GPU back to life. Installation is easy (no wires to solder). You will need to mount a very small board onto the motherboard. An experienced technician can do this in minutes. Other than that R8911 should be removed to turn off power to the dead GPU. This saves energy, generating less heat and conserving battery life. Removing R8911 also prevents the Mac from getting confused by the dead GPU because even with the GPU turned off it will still try to talk to the dead GPU. Depending on what internal contacts in the GPU are ruptured this might confuse or even crash the Mac.

    http://www.cmizapper.com/products/tiresias-gpukiller.html
    CMIzapper Tiresias GPUkiller
    cmizapper.com
     
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  7. synapsea

    synapsea VIP PRO

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    hi i have this machine wih full speed fan and IOS go slowly i need clear me of my dump i have tried the other but black screen my Gpu is 216-0810005 ATI radeon
     

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  8. ThienBui

    ThienBui CEO Staff Member

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    clear me
     

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  9. synapsea

    synapsea VIP PRO

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    tried this dump show question mark not recognize HDD (with my dump start ios but go slowly)
     
  10. ThienBui

    ThienBui CEO Staff Member

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    send photo or video compare two result
    you say i not Understand.
     
  11. chipmunk

    chipmunk VIP PRO

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  12. synapsea

    synapsea VIP PRO

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    with my dump macbook start system IOs ok but go slowly with your clearm not recognize hdd like in foto
     

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  13. ThienBui

    ThienBui CEO Staff Member

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    ok next returm old...
     
  14. synapsea

    synapsea VIP PRO

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    this is with old
     

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  15. ThienBui

    ThienBui CEO Staff Member

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    try again
     

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