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  1. , 后壳: 步骤 1 中的图像 1,1
    • 将你的iMac屏幕朝下放在一个平面上。

    • 拧松三个固定后壳的十字螺丝。

    • 这些螺丝附属于iMac。中间的螺丝将在约三圈半后停止旋转;外侧的螺丝则是约五圈半。不要尝试把这些螺丝拧下来。

  2. : 步骤 2 中的图像 1,2 : 步骤 2 中的图像 2,2
    • 从下方略微提起后壳。

    • 朝你自己的方向拉,令它从iMac上卸下。

  3. 这个步骤还没有翻译 帮忙翻译一下

    : 步骤 3 中的图像 1,1
    • Remove the three Phillips screws securing the power supply to the chassis.

    • The two leftmost screws are captive in the power supply.

    • To aid in removal, it may be helpful to lift the center screw slightly away from the midplane.

  4. 这个步骤还没有翻译 帮忙翻译一下

    : 步骤 4 中的图像 1,2 : 步骤 4 中的图像 2,2
    • Rotate the center Phillips screw on the bottom of the iMac clockwise until the rear panel clamp contacts the edge of the case.

  5. 这个步骤还没有翻译 帮忙翻译一下

    : 步骤 5 中的图像 1,3 : 步骤 5 中的图像 2,3 : 步骤 5 中的图像 3,3
    • While depressing the connector lock, use a heavy duty spudger to pry the power supply connector away from its socket on the logic board.

    • It will be necessary to work from alternate sides until the connector is free.

    • Your power supply may have an ambient light sensor cable attached from the power supply to the logic board. If so, carefully use a spudger to push out the cable towards you using the sides of the cable alternatively to help you slide it out.

  6. 这个步骤还没有翻译 帮忙翻译一下

    : 步骤 6 中的图像 1,3 : 步骤 6 中的图像 2,3 : 步骤 6 中的图像 3,3
    • Lift the power supply slightly from its left edge, then grab each side and rotate the power supply toward yourself.

    • The power supply requires a large amount of force to remove. You may need to bend the edge of the front case toward yourself for enough clearance to remove the power supply.

    • There are several capacitors mounted to the logic board in close proximity to the power supply. Try not to disturb them, as they are delicate and may break off the board.

终点

71等其他人完成本指南。

3条评论

As usual, trickier than the video suggests. In addition to these notes, also check notes on similar power supply installs.

1. It is very hard to disconnect the optical sensor cable from the motherboard. There's no hidden catch, you just have to insert your spunger/thin screwdriver blade between the fittings and gently twist. I used a surgical clamp to also pull on the cable -- that did it. (The cable is being replaced, so you don't need to worry about it).

2. The top right screw is hard to remove. I had to partly remove it, then lever the power supply up as in the video while continuing to loosen it.

3. I used thin wide screwdriver blades to disconnect the power supply connect, my spudger wasn't rigid enough.

4. The supply has clearly been used before. In the context of something this old "new" means Apple refurbished. That's fine.

5. Beware the optical sensor, it's glued to the power supply. Look for it. When you insert the new supply place it first.

John Faughnan - 回复

Thoughts about using an industrial strength air duster to rid the power supply of free radicals? Wonder it's impact on the capacitors.

acohen25 - 回复

This completely fixed my issue. Took all of 5 minutes and I was back up and running. Just take your time and anyone could do this. Perfect instructions and I saved $100 in repairs.

Teresa - 回复

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