I have a bondi blue iMac G3 233MHz/B and it seems to have 'died'. When I push the button to switch it on, it starts to boot up but just as the button turns from orange to green and the oint where the screen would normally light up, it conks out. After that, if I try to switch it on again, nothing happens. I have to leave it for an hour or so before it'll just do the same thing. Someone suggested it might be the Lythium battery so replaced that but it hasn't worked. Now someone else thinks it might be the power supply unit - an expensive item to buy if that's not the problem! Can anyone shed anymore light on this?