iMac Late 2006 won't power up

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iMac Intel 17"

1.83 GHz Core Duo 处理器或 1.83, 2, 或 2.16 GHz Core 2 Duo处理器 A1208 (EMC 2104/2110/2114/2124)

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Shane @shane84188

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发帖于: 2013年1月12日

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iMac Late 2006 won't power up

Installed SSD recently and everything worked for a week. This morning, I was unable to power on the machine. Disassembled the machine and peeled back the EMI cover. The first LED light came on as soon as connected to the power source and both fans jittered. When the power button is pressed, the second LED came on and stayed on. However, nothing happens. The third LED light never come on. Kept holding down the power button and the second LED went off. Any advice would be greatly appreciated.

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mayer @mayer

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MacHale Enterprises

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发帖于: 2013年1月12日

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Sounds like a bad power supply. Also examine the 24 capacitors for swelling and/or corrosion.

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Thanks mayer. Will remove the power supply and look at it today. The fact that the first LED stays on solid when iMac is connected to the power source does not necessary indicate that the power supply is good?

由 Shane 完成的 2013年1月13日

Almost all the power supplies 20 to 1 have had the the first green light on. All that indicates is that there is trickle power getting to the unit.

由 mayer 完成的 2013年1月13日

Removed the power supply and examined it; noted 5 capacitors on the board. No swellings or corrosions were noted. Is there ways to test the PS to determine if it is good or bad?

由 Shane 完成的 2013年1月14日

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Thanks mayer. Will remove the power supply and look at it today. The fact that the first LED stays on solid when iMac is connected to the power source does not necessary indicate that the power supply is good? — Shane
Almost all the power supplies 20 to 1 have had the the first green light on. All that indicates is that there is trickle power getting to the unit. — mayer
Removed the power supply and examined it; noted 5 capacitors on the board. No swellings or corrosions were noted. Is there ways to test the PS to determine if it is good or bad? — Shane