Hey so a friend gave me an iMac G5 to work on. It won't turn on. I left it plugged in for a couple hours and nothing happens. I've read a few things and tried them: Reset SMC, Manually reset SMU, pressed the Internal power button, etc. The only thing that happens is LED 1 is lit when the machine is plugged in. I have checked all of the capacitors and they all look perfect, no bulging or leaking. Is there anything else I can try?