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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发帖于: 2021年5月17日

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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?

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