Only diagnostic led 2&3 lit
I have a mid-2007 iMac 24" 2.4 Ghz. When I got it, it did not start up. The fans would spin up and then stop. The screen doesn't even flicker. I saw that the diagnostic leds 1,2 and 3 would light up, but not the forth. So I replaced the video card and nothing changed. Next I replaced the logicboard, which then gave me a different set of leds. This time only 2 and 3 were lit. #1 and 4 never come on.
Assuming that the video card and logicboards I purchased were good, my only other option, would be the power supply or should I return these things to the store and scrap this POS?
Is this a good question?
2 Comments
No, the screen never turns on. I can hear the cd drive and hard drive spin up. There is no chime. Led 2 and 3 will light up and then turn off and then on again. The fans do the same thing. And this is all prior to the drives spinning up.
The previous logicboard would have the first 3 lights lit up, but there was no chime and the screen never came on.
by Eric S
I have a related problem, posted here:
Diagnostic led 1 stays on until hard drive plugged in
by jeremy767