IMac 700SE - power supply dead? can i get a new one?

Question

well the power went out last week, and when it came back up my iMac did not
right now, i plug it in, hit the power button, the power light flashes, i hear a click (about a half second later), then it just goes off and the power button stops responding it to anything, i unplug it, plug it back in, hit the power button and the same thing happens, to me this sounds like a dead power supply as i have had this happen on a few PCs and when the power button stops functioning that to me sounds like its the power supply overloading, and in this case meaning its dead
now i don't really want to spend the money on a new computer as this is only used by my mom every few couple of days for email/IM/web, so does anyone know where i could get a replacement power supply? (i think) its a sliver shaped board that attaches to the main board and makes me think that i will never find a replacement unless i buy another 700SE iMac off ebay

Answer 1

nope, didn't help, nothing changed with the new battery
though i did notice that it booted when i didn't power up the drive (no power cable to it), but that has nothing to do with the battery, i also tried pressing every button attached to the board and nothing helped, so to me it looks like the power supply can't spin up the hard drive (the drive is good too, its in my other comp right now)
does anyone know how compatible the 400Mhz iMac is with the 700Mhz parts wise? i'm suppose to be getting a 400Mhz iMac soon, and would like to know if i could swap out the logic board on the 400 with the one from the 700 as that 400 one has a better screen and working power supply, but i would like the nice speed boost