iMac g5 wont power up/
How do I know my power supply is working properly, befor buying a new one?
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You could try opening your iMac so you can turn it on and see if the diagnostic leds light up.
http://support.apple.com/kb/HT2831
in particular:
Locate the large white arrow in the middle of the computer.
Above this arrow, you'll see four LEDs:
LED 1 indicates that trickle voltage from the power supply has been detected. This LED will be ON when the computer is turned off and your power supply is working correctly.
UPDATE:
If the 1st light is on that indicates that the power is flowing to the computer. So it could very well be a logic board failure. At this point i'm not sure trying to repair a logic board failure is worth it.
Sorry.
Make sure you pull the HD though if you want to recover your data.
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Thank you for your kind response.
I did tried to open it, and the led1 light is on, none of the others, and tried to switch on through internal button- no response and tried reset and again internal button- no response.
according to the apple literature- it is logic board failure- do you agree with that?
Thank you again
Is the #1 light on when the computer is turned off?
Thank you, when I plugged the wire to a outlet, it is on and when I take out the wire it is off. My main problem is turning on the machine with the button from the behind.
Thank you again
arivu
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Look on the bottom of the stand to find your exact model.
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