Chosen Solution
My imac intel 24 alum 2.8Gh Emc2211 won´t do anything when I press the power button. I´ve checked wall outlet, power cord, opened and cleaned the dust in it. I´ve read that probably power supply or logic board may be the culprits. I want to repair them myself. How can I be sure which one is responsable. Is there any way to test it when, I repeat, my computer does not give any signal of life (as if it would be unplugged) Thanks for your help Update Hello Mayer, at last I received the Power Supply yesterday and I assembled it a minute ago. My iMac is back in service! for a few seconds I was afraid of pushing the button and not hearing the chime… but there it was. Thanks again for your help, and thanks also to the members and participants of the ifixt it site.
Sounds like a power supply issue to me. Try unplugging it and holding down the power on button for five seconds. Then plug it back in and give it a shot. Test your wall outlet for power. Remove the screen and check the LED diagnostic lights to the right of the RAM slots and let us know your results.
All good but when you have an iMac 20 inch and the power light goes on but no chime, display or backlight. I was suggested to still replace the power supply but like the other post could also be the logic board. What answer can you give me?
