crwdns2934241:0crwdne2934241:0 Sasa Popovic

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1,2 ,3 and 4 LED lights OFF ... means?

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I have opened my iMac to mace diagnostic with LED lights, what I see all of them are off. Since my computer can’t turn on at all, I was thinking that can be the power supply but when I see now that all led lights are off don't know what that means?

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iMac Intel 21.5" EMC 2544

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open