OT: iMac necromancy

Sorry for the OT, all, but I know a few of you have iMacs, probably for
running Yellow Dog Linux on.

I've been reqeusted to resurrect one with a blown flyback transformer, so
I'm hoping one of you guys has done this and can tell me a local source
for the part.

Part # is 6174Z-1017D, if you've bothered to read this far.

Thanks!

TJ