I just recieved a 500Mhz Powermac today with the intention of repairing it (missing parts) and I tried to remedy some problems by resetting the PMU switch on the logic board, but it seems like there's not one! What do I do now? I'd post a pic but I don't have a digital camera, but I've looked at the diagram and where there's supposed to be a switch, there isn't one. It's an AGP (not Gigabit Ethernet) model. Thanx.