No power most of the time
My Imac won't switch on. I broke it down to view the diagnostic LEDs but can't find them - even after removing the screen. While i had it open, i cleared out all of the dust with a hairdryer and it started working. I put it all back together and its stopped working again.
Does the intermittant nature of this fault mean its not the motherboard or the power supply.
Is it the switch.