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My Imac refuses to boot ; I have taken off the bezel but I can not find the diagnostic leds ; can someone please post a photo of the leds showing where they are located . Thank you in advance .
The diagnostic LEDs are located to in a column next to the memory slot. Please see the image below. LED 1 : Trickle power from the power supply to main logic board. LED 2: Main logic board has detected trickle power from the power supply when the unit is powered on. LED 3: Computer and video card are communicating with each other. LED 4: Computer and LCD panel are communicating with each other. Update
