No power on this 2012 21,5" iMac
Hello, I have a problem with a late 2012 21.5” iMac (A1418) EMC 2544
Mother board 820-3302-A It does not turn on, so I lifted the screen off
There are 4 diagnostic LEDs
Test 1: With power supply cable connected
Test 2: If I press the button, there are just
Nothing happens on the other
- no ventilation which turns
- no beeps nothing
How do these LED corresponds with this model?
Usually: power unit + motherboard + video card + screen
The I find bizarre as it skips the second and there's only 1 and 3 lit.
Thank you for your help, failure arrival alone
Ist dies eine gute Frage?