iMac - no power, number 1 diagnostic LED on
I am trying to diagnose the issue with my iMac. The only sign of life is the number 1 LED on the logic board.
This light does not come on if either the invertor or AC Line Filter are disconnected from the power supply. My iPhone does not charge if connected.
I got another power supply from ebay and am getting the same symptoms with this one.
Is there anything else I can try to diagnose the issue?