Solved Imac A1418 Black Screen 3 Led On But 1 Off Imac Intel 21 5 Emc 2544
Chosen Solution Hello After changing the disk on the SSD, a gray vertical bar appeared on my screen.After the next opening I had a few colored vertical stripes on the screen.I opened it again and I drank the tape on the power and plugged in. Now the screen is black. Make it start (dong ) there is a fan but no image. On the main board only 3 LEDs are light but the last 4 Led is off....