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Model A1174 with 2 GHz Core Duo or Model A1207 with 2.16 or 2.33 GHz Core 2 Duo

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Power - on Failure (mostly)

IMAC 20'' 5.1 late 2006


I have a "funny" failure with my 20'' IMAC.

First - month ago - he didn't want do start with the first try, but he came...

But it was getting poorer - and after a longer time and not using he wouldn't start.

The power-supply was not ok. One capacitator war blown. I changed it.

I changed the big 150mf 420v too.

First: no succes. LED01 is blinking.

The ventilator "tries to turn". (neerly not to see, so little)

But: if the IMAC ist connected to 220V and I seperate the connection that comes from the power-supply on the mainboard and put it together after some secondes, LED 01 ist ok and the IMAC works.

Anny idea to fix it?



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Solution retenue

Your diagnostic LED indicates you still have a PSU power supply issue. Replace or repair it.

here's how:

iMac Intel 20" EMC 2105 and 2118 Power Supply Replacement

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peter sera éternellement reconnaissant.
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