Introducción

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

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

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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.
  • 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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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.
  • 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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Now, remove the DB-15 Video connector from the logic board. It may be helpful to use a Phillips screwdriver to remove the thumbscrews. It may be helpful to use a Phillips screwdriver to remove the thumbscrews.
  • 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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Remove the power cable from the logic board assembly. Remove the power cable from the logic board assembly. Remove the power cable from the logic board assembly.
  • Remove the power cable from the logic board assembly.

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Guía de regalos para el día del padre
Honremos a más que nuestros padres—celebremos a todos los mentores que nos enseñaron a reparar.
Guía de regalos para el día del padre
Honremos a aquellos que nos enseñaron a reparar.
Remove the front panel connector. Remove the front panel connector.
  • Remove the front panel connector.

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

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

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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.
  • 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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Now, remove these screws. Now, lift the bottom cover off. Now, lift the bottom cover off.
  • Now, remove these screws.

  • Now, lift the bottom cover off.

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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.
  • 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.

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

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

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Power Supply:
  • 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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Remove these three screws. Remove these three screws.
  • Remove these three screws.

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Now, swing the board out, and remove the following connectors: AC Power To System Fan
  • 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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