Model A1419 / Late 2012 / 2.9 & 3.2 GHz Core i5 or 3.4 GHz Core i7 Processor, ID iMac13,2

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LED #1 blinks when connected. iMac not turning on

Hi. I have a late 2012 iMac 27 inch. This morning I tried to turn it on and nothing happened. I removed the screen to see what's going on. On the logic board, I can see that 1 LED is blinking. When I press the power button the LED resets the blinking but it never stops. I've been looking everywhere to determine what this blinking LED mean. PD. It is the only LED on, the other 3 of them are off. Thanks

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Well it's a bad power supply. But not really that bad. It can probably be fixed with just a little work over with a soldering iron. It's late and I'm going to bed but Google "cold solders" and how to fix them.

UPDATE 3/16/16

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Thank you so much! I'll be trying to find some information about cold solders. Hope to find something. Can this be tested with a electronic tester? Thanks again!


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manuelt637 will be eternally grateful.
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