Computer wont turn on, no chime, fans pulsing.
I shut down my Power Mac on Wednesday and on Thursday morning it refused to boot.
The white led lights up when the power button is pressed but does not stay on. I can hear the fans pulsing.
When this happens, I can not turn the system off, the only to shut it down is to unplug it.
There is no chime and the screen is blank.
When I open it up and remove the plastic air deflector the fans increase speed but continue to pulse.
I have disconnected all peripherals.
I have swapped out the ram.
I have reset the PMU.
Can this be a power supply problem?
How can I test or diagnose the power supply.
I run my own consultancy and this is my work computer, I need it yesterday.
Is this a good question?