Black Screen after changing thermal paste
IMAC 2011 21.5 EMC 2428
It was working perfectly. It was opened to change thermal paste. Now it turns on but the screen goes black after a few seconds the fans accelerate.
The diagnostic LEDs light up the 4.
Apparently there was no error in the assembly or damage to any cable or board.
the machine had no problem with the video card before
After reassembly, he presents this symptom.
Only the thermal paste of the processor was changed.
The video card has not been tampered with.
Do you have any tips or details that I may be missing?
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