Blank Screen Led 1 2 3 5 Are On Fan Starts Speeding Up Imac Intel 27 Retina 5K Display 2019

Chosen Solution

Dropped the LCD, purchased new, and I get a blank screen. LED when boot LED 1, 2, 3, and 5 are on. LED 4 off.

Inspect the logic board connectors for damage. It doesn’t take much to mess you up if the screen pulled away. Also did you transfer the thermal sensor to the new screen?