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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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Screen won't turn on after cpu upgrade

I just upgraded my late 2015 imac's cpu to an intel core i7 6700k skylake unlocked 4.0Ghz processor and when i tried to turn it on after, i got the chime that it turned on, but the screen will not turn on . I checked the connections and they're all good, so i have no idea what it could be . Anyone have an idea? Thanks

Rispondi a questa domanda Anch'io ho questo problema

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I followed ifixits procedure step by step. And the fan works as well as key noises but the screen wont turn on...


Also tried resetting pram and luck


Switched back to my old luck wtf


Sooo i just found out that its all working good...except the screens light is dead. If i shine a flashlight on it i can see how can i fix that? Replacing a 5k screen is probably $$$$$


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Did you fix it? Are the led’s on the LB on?

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Sean H sarà eternamente grato.
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