Model A1419 / EMC 2806 / Late 2014 or Mid 2015. 3.3 or 3.5 GHz Core i5 or 4.0 GHz Core i7 (ID iMac15,1); EMC 2834 late 2015 / 3.3 or 3.5 GHz Core i5 or 4.0 GHz Core i7 (iMac17,1) All with Retina 5K displays

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Black Screen and Loud Fan

This iMac is under 3 years old and have never been serviced. The black screen issue started when I tried waking it up from sleep. When I tried to restart it I can’t get the screen to show anything. I’ve tried resetting the NVRAM (the second chime is like coming from a tiny speaker, is this normal) and the SMC. When i tried to run diagnostics that’s the time the fan started getting loud

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Resetting the SMC will sometimes cause the fans to race for a short time until he system fully boots up.

Are you able to see any light from your display when you start your system?

Try taking a flashlight held against the screen to see if you can see your desktop and its icons, are you able to see them?

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rhoderick.bocobo sarà eternamente grato.
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