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iMac G3 Model M4984 Power Supply Replacement

Introducción

The iMac uses an incredibly hard to get to power supply. It has 24-Pins. This will require taking the iMac fully apart.

Qué necesitas

  1. iMac G3 Model M4984 Power Supply Replacement, Logic Board: paso 1, imagen 1 de 1

    • The iMac G3. This was a great computer for the time, and had plenty of features.

    Traducir

  2. iMac G3 Model M4984 Power Supply Replacement: paso 2, imagen 1 de 1

    • Start by flipping the iMac upside-down. It may help to lay it on a towel, so you don't damage the screen, or scratch the face.

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  3. iMac G3 Model M4984 Power Supply Replacement: paso 3, imagen 1 de 3 iMac G3 Model M4984 Power Supply Replacement: paso 3, imagen 2 de 3 iMac G3 Model M4984 Power Supply Replacement: paso 3, imagen 3 de 3

    • Remove this Phillips screw.

    • Using a flathead screwdriver, work your way around the bottom cover, until it comes off.

    • Then, lift the bottom cover up and out, and set it aside.

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  4. iMac G3 Model M4984 Power Supply Replacement: paso 4, imagen 1 de 3 iMac G3 Model M4984 Power Supply Replacement: paso 4, imagen 2 de 3 iMac G3 Model M4984 Power Supply Replacement: paso 4, imagen 3 de 3

    • Now, remove the DB-15 Video connector from the logic board.

    • It may be helpful to use a Phillips screwdriver to remove the thumbscrews.

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  5. iMac G3 Model M4984 Power Supply Replacement: paso 5, imagen 1 de 3 iMac G3 Model M4984 Power Supply Replacement: paso 5, imagen 2 de 3 iMac G3 Model M4984 Power Supply Replacement: paso 5, imagen 3 de 3

    • Remove the power cable from the logic board assembly.

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  7. iMac G3 Model M4984 Power Supply Replacement: paso 6, imagen 1 de 2 iMac G3 Model M4984 Power Supply Replacement: paso 6, imagen 2 de 2

    • Remove the front panel connector. (You may also need to remove an additional screw that connects the front panel connector to the logic board assembly).

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  8. iMac G3 Model M4984 Power Supply Replacement: paso 7, imagen 1 de 3 iMac G3 Model M4984 Power Supply Replacement: paso 7, imagen 2 de 3 iMac G3 Model M4984 Power Supply Replacement: paso 7, imagen 3 de 3

    • Now, remove these Phillips screws.

    • Now, grab the logic board assembly by the piece of plastic, and lift it out.

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  9. iMac G3 Model M4984 Power Supply Replacement: paso 8, imagen 1 de 1

    • The logic board assembly. This is the heart of the computer, it contains the motherboard, CPU, RAM, V-RAM, PRAM battery, the hard drive, and the optical drive.

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  10. iMac G3 Model M4984 Power Supply Replacement, Power Supply: paso 9, imagen 1 de 3 iMac G3 Model M4984 Power Supply Replacement, Power Supply: paso 9, imagen 2 de 3 iMac G3 Model M4984 Power Supply Replacement, Power Supply: paso 9, imagen 3 de 3

    • Now, remove these screws.

    • Now, lift the bottom cover off.

    Traducir

  11. iMac G3 Model M4984 Power Supply Replacement: paso 10, imagen 1 de 3 iMac G3 Model M4984 Power Supply Replacement: paso 10, imagen 2 de 3 iMac G3 Model M4984 Power Supply Replacement: paso 10, imagen 3 de 3

    • Removing the front bezel:

    • There isn't a great position to put the iMac in to remove the front bezel. I recommend flipping it so it it like it would normally be positioned.

    • Remove these two Phillips screws.

    • Now, work your way around the bezel with a flathead screwdriver, and then, pivot it up towards the top, and remove it.

    Traducir

  12. iMac G3 Model M4984 Power Supply Replacement: paso 11, imagen 1 de 3 iMac G3 Model M4984 Power Supply Replacement: paso 11, imagen 2 de 3 iMac G3 Model M4984 Power Supply Replacement: paso 11, imagen 3 de 3

    • Removing the translucent plastic:

    • Removal of the front bezel will reveal two screw covers on the top, pop them off with a Phillips screwdriver.

    • Now, use a Phillips screwdriver to remove the screws.

    • You can now remove the plastic.

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  13. iMac G3 Model M4984 Power Supply Replacement: paso 12, imagen 1 de 3 iMac G3 Model M4984 Power Supply Replacement: paso 12, imagen 2 de 3 iMac G3 Model M4984 Power Supply Replacement: paso 12, imagen 3 de 3

    • Removing the EMI Shield:

    • Remove all 10 of these screws, and lift the EMI Shield off.

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  14. iMac G3 Model M4984 Power Supply Replacement: paso 13, imagen 1 de 1

    • Power Supply:

    • Removal of the EMI shield will reveal two major circuit boards.

    • The Display Driver:

    • The Power Supply:

    • The power supply and driver board are dangerous, if you do not know what you are doing, you could severely injure or kill yourself.

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  15. iMac G3 Model M4984 Power Supply Replacement: paso 14, imagen 1 de 2 iMac G3 Model M4984 Power Supply Replacement: paso 14, imagen 2 de 2

    • Remove these three screws.

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  16. iMac G3 Model M4984 Power Supply Replacement: paso 15, imagen 1 de 3 iMac G3 Model M4984 Power Supply Replacement: paso 15, imagen 2 de 3 iMac G3 Model M4984 Power Supply Replacement: paso 15, imagen 3 de 3

    • Now, swing the board out, and remove the following connectors:

    • AC Power

    • To System Fan

    • Don't remove this. It comes free with the logic board power.

    • To Display Driver

    • The connector that is attatched to the logic board; to remove it, simply thread it through the hole in the metal:

    • Now, you should be able to remove the power supply.

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Conclusión

To reassemble your device, follow these instructions in reverse order.

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Chris Green

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Un comentario

i have exactly this problem with my vintage imac g3 took it to repair shop they said could not find it do you know where i can get this power supply and pay to have it installed

richiezuniga3 - Contestar

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