My iMac doesnt start - Black screen

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iMac Intel 27" EMC 2546

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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Klaus F @medias

Rep: 25

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Posted: Dec 5, 2016

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My iMac doesnt start - Black screen

iMac 27" EMC2546

Hello!

I have a big problem with my iMac.

I can´t start the iMac - there is no gong, fan or something else. Always black screen.

These things i have already done:

- SMC reset

- cleaning the fan

- change the power supply

- change the battery on the logic board

Now i dont have any ideas, what i can do.

I don´t hav a garranty for the iMac - it is from 2013.

If anybody have a idea, please let me know!

kindest regards

Klaus

Answer this question I have this problem too

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Did you solve your problem? I have the same problem except that I can hear the gong.

May 22, 2017 by michaeleugster

Tell us what the diagnostic LEDS on the logic board are telling you.

May 22, 2017 by mayer

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Did you solve your problem? I have the same problem except that I can hear the gong. — michaeleugster
Tell us what the diagnostic LEDS on the logic board are telling you. — mayer

sscelfo @sscelfo Rep: 101 2 · Answer 1 · 2026-08-25T11:13:21-07:00

sscelfo @sscelfo

Rep: 101

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Posted: 4 days agoAug 25, 2026

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There should be little green lights inside your computer that turn on when you press the power button that troubleshoot basic board issues, if it's beeping then re-seat the RAM or clean it up, if it's not doing anything try a new CPU.

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iMac Intel 27" EMC 2546

My iMac doesnt start - Black screen

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