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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