LED’s 1-3 light up then everything shuts off again.

LED’s 1 & 2 are on when the power cable is plugged in. Press the power button, LED’s 1-3 light up, the fan comes on for a split second, and then everything shuts off again.

iMac 24” early 2009

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Can you give us some background here. What where you doing when the system failed? Did you smell anything burning or have a lighting storm or power failure?

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