Hi all,
My Mac was asleep and the next day the power was off, so I tried to restart but nothing. I called apple they walked me through the basic troubleshooting (reset sec etc...) nothing. this was confirmed at the apple store. They suspected the power supply. So I took it home bought a tested used power supply and when it arrived installed it, but still nothing. Looked for the diagnostic leds... found 5 on the lower right hand side of the logic board (not where they are on any photos I saw online, but they look like them. However none are illuminated when connected to power. Where do I go now? I'm not by any means an electronics guy but understand some basic principles and have a multimeter.