My G5 Power Mac, dual 2.0 (early 2005) just won't start. It's completely dead. I read that the power supply was the most likely suspect so I got another one cheap from a guy on eBay. Swapped that one in and still nothing. Checked the battery and switched the PMU (according to Apple's instructions, no change. Now I think I've pressed the PMU more than once, which Apple warns not to do.
The power supply from eBay could be bad too. I need to learn to test it. I found pinout diagrams, but I'm wondering if I need to jumper any of the connections to switch the power supply on for testing. Any thoughts on my situation?