Last night my twin G4 (867 MDD) lost power in a blackout, and now when I try to restart it, the power switch will glow when I depress the button, but fade as soon as I let off - no start up sound, no fan kicking in. Is my logic board fried? I thought maybe I should reset the PMU switch on the board, but wanted to know if I needed to take the battery out first. Anyone else have this problem? I tried leaving it unplugged overnight and retrying, but same results... help, please?!