Dead iMac, pinout PSU and hardware troubleshooting
Trying to change the CPU of my iMac from i3 550 to i7 860 somethhing is gone wrong. After trying to turn on the iMac it seems like it's died at all. No noise, no fan activity, no beeps, nothing when I press the On button.
The four leds on the motherboard are all switched off. Note that the AC source is ok, the AC cable is ok (tried 2 surely working), I checked connection between AC and power supply (there is a little noise like a spark when I connect the AC cord), I checked 50 times the connection between power supply and logic board. But I don't know how to verify the power supply, I don't have the right pinout and I don't know if in standby mode the PSU will give voltage to the pins.
I thought to play my Mac with new quadcore CPU, but I'm without my Mac at all... very sad.
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