I have a friend who used to be a Genius, and he absolutely recommended against me doing it myself, indicating that reseating the processors was 'not like doing it in any other PC,' and said even though he'd done it hundreds of times, it was his least favorite repair because of the delicacy of getting the processors + heat sinks back in, and then thermally re-calibrating the fans so everything ran as it should. YMMV.)I had the PS in my Dual 2.0 die earlier last year, and opted to fix it since I didn't have the money for a new machine. Still no difference whatsoever.Any other ideas, or is my guess that the motherboard is dead to probably the right one?Thanks. I've tried pressing the PMU reset button on the motherboard, and pulling the green lithium battery and leaving it unplugged for 1/2 an hour. But it does not respond at all to a press of the power button. When the AC power is pluggged in, it makes a slight 'crackle' sound, and the sounds of a relay opening or closing the contacts. The white power LED on the front panel comes on dimly. But, after replacing the power supply, it is still playing dead. So it came to me installing the new one, as it is a bit tricky to get it in and out of the G5. He had previously taken it to the apple store, and they had quoted him ~$500 to replace the PSU, or that he could order a replacement online and change it out himself. It is not covered under the extended Apple Power supply replacement plan. It had suffered a power supply failure late last year. I've got a dual 2.0 G5 Power Mac i've been working on for my stepcousin.

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