So I am still trying to resurrect my goofy PMG5. I finally got an error pointing to a CPU diode issue. It didn't specify which CPU has the problem. I have another PMG5 with bad CPU(s). I suspect only one of the CPUs is actually bad. All four CPUs pass ASD2.6. When the cpu diode presents itself, the unit will not power on. The issue also takes up to two weeks to present itself. What is a good way to determine which of the 4 2.0Ghz G5 CPUs are bad? is there a way to only run one CPU in the PM? The issues followed the CPUs to another G5, so I am confidant the issue is the CPU.