iMac 2014 27 inch no display or output. All diagnostic leds lit up.

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iMac Intel 27" Retina 5K Display (Late 2014 & 2015)

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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Ger @gersrt

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Posted: May 17, 2021

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iMac 2014 27 inch no display or output. All diagnostic leds lit up.

Hi. I'm trying to figure out what the issue is with my imac 2014 27 retina. When I turn on the screen goes light black and no chime. There is no output from the back port to hdmi.

I thought at first it might be a gpu issue. But all four diagnostic leds are lit up inside. Was sure if there was an issue with the gpu one of them would be off.

Any help please?

Answer this question I have this problem too

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