Mac Won T Power On Only Led 2 Green Imac Intel 27 Retina 5K Display 2019

Chosen Solution

I have a 2019 27” iMac 27 base model, it doesn’t start, I have only the onboard diagnostics LED #2 green and blinks when push the power button. Any idea?

If it won’t power on at all its the power supply, replace it and you’ll be fine. If it’s one of the most common 2011 iMac 27” failures-it’s the vga card not easy at all.