Blast :-(

My iMac fused last night! *sob* I hope it´s just that, but I know it´s not the fuse in the plug, because we tried replacing that and it´s not working. Anyone any idea what I could try to rescue it, before I have to spend dosh I don´t have? It´s doubly annoying because I have about 20k words written that I don´t have any back-up for, and about 5k that I have only hand-written *sigh*. It´s seriously off-pissing, I don´t need this right now.