Chosen Solution
So about a week ago i upgraded my imac’s ssd and cpu and everything was good. Then, the backlight stopped working(just the backlight). I could still use it if i shined a bright light on it. Today though i opened up my imac again, undid the cable connections and promptly reconnected them. Now for some reason the whole screen is dead and the fan spins as fast as it can right after startup. Anyone have a clue?( F*** apple and myself this sux) Update (12/03/2016) *the backlight stopped working when i upgraded cpu Update (12/03/2016) iMac 5k late 2015 EMC 2834 3.2GHz intel core i5 6500(upgraded to intel core i7 6700k 4.0 GHz) imac specs: http://www.everymac.com/systems/apple/im… cpu specs: http://ark.intel.com/m/products/88195/In… and i put a crucial mx300 750Gb sata ssd with the owc in line thermal sensor into it. thanks
I think you’ll need to double check your system by putting back the i5 CPU back in to see if the system is still working here. From the specs perspective you have the correct chip. As this is such a new system I don’t think many people have swapped out CPU’s. Is there a reason you did this Vs getting the high end model from the get go? From what you’ve stated here you should be working, so that leaves the question if you damaged something in the process. If you are able to swap the chips and the system recovers then it’s likely the chip you got is defective.
Check your connection, if the fan is running 100% could be over worked and then you would have to replace the fan or check for any loose connections if the fan replacement doesn’t work, could be the temp connector.
