Are there any diagnostic LEDs?
I have quite a scarce iMac model: EMC 2104. The fact is that my computer is not starting at all (I guess the power supplier is dead). I tried to open it and look for some diagnostic LEDs, as I saw it concerning other iMac models.
But I'm not really sure if this iMac model actually has diagnostic LEDs, or where these LEDs are... Can you tell me or give me some clues about this interrogation?