Chosen Solution
Found an damaged iMac A1311-2428. The student mentioned it had ‘issues’ before the screen was ‘damaged’ before driving off. When I power it on. It goes through boot up fine with boot chime and display lighting up… even the section of backlight BUT nothing on the display. I picked up a Mini Display Port to HDMI cable. I tried a monitor with DVI to HDMI adapter and TV with no luck. I’m using a standard windows USB keyboard and mouse to try to switch to external monitor. No luck. I’m trying to see if what errors exist before sinking money into new LCD and front glass plate. If I can get it back working … bonus. Else it was worth the time trying. Like I can do any worse to it as it is now. Thanks in advance.
Likely the GPU failed, people tended to push these systems beyond what they where designed to support with heavy graphics. This is what’s required to fix this iMac Intel 21.5" EMC 2428 GPU Card Replacement beyond the replacement display which doesn’t make this worth to fix. Sorry ;-{
