Where are the diagnostic LEDs on the iMac mid-2011 27" EMC 2429?I've searched as much of the internet as possible for a good few hours and not found anything concrete, so apologies if...
Answer to "Where are the diagnostic LEDs on the iMac mid-2011 27" EMC 2429?"Ok, well I can answer my own question- yes those are the right LEDs. All I did was wiggle the connectors again, and purely out of curiosity plug it back in and not only did LED #1 /501 light up, when I pressed the power button the whole %#*@ thing burst back into life. Typical.